354
+354 is the international calling code for Iceland.
- Even
- Composite
Where 354 fits
Why 354 is special
Iceland runs almost entirely on geothermal and hydroelectric power and uses a patronymic naming system rather than family surnames, so its phone book is ordered by first name.
Factors & digit properties
- Divisors (8)
- 1, 2, 3, 6, 59, 118, 177, 354
- Prime factorisation
- 2 × 3 × 59
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 354
- Scientific notation
- 3.540 × 10^2
Roman numerals
C C C L I V
CCCLIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 1 1 0 0 0 1 0
1 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 354
Octal
5 4 2
5 × 64 + 4 × 8 + 2 × 1 = 354
Hexadecimal
1 6 2
1 × 256 + 6 × 16 + 2 × 1 = 354
Read as powers of two: 256 + 64 + 32 + 2 = 354.
In historical numeral systems
Egyptian
3 coils of rope, 5 hobbles, 4 strokes
3 × 100 + 5 × 10 + 4 × 1 = 354. 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 + 4 vertical wedges (units place)
5 × 60 + 54 = 354. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then nu, then delta, marked as a numeral
tau-nu-delta + keraia
tau + nu + delta 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 dalet
shin-nun-dalet
shin (300) + nun (50) + dalet (4) = 354, written in descending order.
Maya
3 bars + 2 dots (upper, twenties place) over 2 bars + 4 dots (lower, units place)
17 × 20 + 14 = 354. 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
- Abundant number
Related numbers & connections
Iceland and the Faroe Islands are both North Atlantic island communities outside the EU. Iceland runs almost entirely on geothermal and hydroelectric power.
View 298 →Other connections
- is associated with298
why?
Strength 0.50, confidence "high".
Geography
+354 reaches Iceland, where nearly all electricity and heating come from geothermal and hydro sources, and where the telephone directory is alphabetised by given name because surnames are patronymics.
DocumentedGeographyGeography: Iceland
Common questions
Is 354 a prime number?
No, 354 is not prime.
What are the factors of 354?
The factors of 354 are 1, 2, 3, 6, 59, 118, 177, 354.
What is 354 in Roman numerals?
354 in Roman numerals is CCCLIV. IV is subtractive: one before five — five minus one. Written additively it would be CCCLIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026