355
+355 is the international calling code for Albania.
- Odd
- Composite
Where 355 fits
Why 355 is special
Albania sits in the 35x European range. It was among the most isolated countries in Europe until 1991, and its telephone network was rebuilt substantially from that point rather than modernised gradually.
Same number, different meanings
How 355 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Albania sits in the 35x European range. It was among the most isolated countries in Europe until 1991, and its telephone network was rebuilt substantially from that point rather than modernised gradually.
- Technology & computing
The F355's paddle-shift gearbox was derived from Formula One and offered as an alternative to a manual. Within two decades the manual had effectively disappeared from performance cars.
- Geography
+355 reaches Albania, in the 35x range with Portugal, Ireland, Malta and Cyprus — a stretch grouped by assignment order rather than by geography.
Factors & digit properties
- Divisors (4)
- 1, 5, 71, 355
- Prime factorisation
- 5 × 71
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 355
- Scientific notation
- 3.550 × 10^2
Roman numerals
C C C L V
Binary
1 0 1 1 0 0 0 1 1
1 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 355
Octal
5 4 3
5 × 64 + 4 × 8 + 3 × 1 = 355
Hexadecimal
1 6 3
1 × 256 + 6 × 16 + 3 × 1 = 355
Read as powers of two: 256 + 64 + 32 + 2 + 1 = 355.
In historical numeral systems
Egyptian
3 coils of rope, 5 hobbles, 5 strokes
3 × 100 + 5 × 10 + 5 × 1 = 355. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
5 vertical wedges (sixties place), 5 corner wedges + 5 vertical wedges (units place)
5 × 60 + 55 = 355. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then nu, then epsilon, marked as a numeral
tau-nu-epsilon + keraia
tau + nu + epsilon written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
shin, then nun, then he
shin-nun-he
shin (300) + nun (50) + he (5) = 355, written in descending order.
Maya
3 bars + 2 dots (upper, twenties place) over 3 bars (lower, units place)
17 × 20 + 15 = 355. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
Albania and Serbia are neighbours whose relationship is dominated by the disputed status of Kosovo, which was assigned +383 only in 2016.
View 381 →Criticism of the 348's stability shaped how its successor's suspension was developed.
View 348 →Technology & computing
The F355's paddle-shift gearbox was derived from Formula One and offered as an alternative to a manual. Within two decades the manual had effectively disappeared from performance cars.
DocumentedTechnology & computingGeography: Italy
Geography
+355 reaches Albania, in the 35x range with Portugal, Ireland, Malta and Cyprus — a stretch grouped by assignment order rather than by geography.
DocumentedGeographyGeography: Albania
Common questions
Is 355 a prime number?
No, 355 is not prime.
What are the factors of 355?
The factors of 355 are 1, 5, 71, 355.
What is 355 in Roman numerals?
355 in Roman numerals is CCCLV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026