55,296
55,296 is U+D800, the first of the 2,048 code points Unicode permanently reserves as surrogates.
- Even
- Composite
Where 55,296 fits
Why 55,296 is special
Nothing is ever assigned in this range, and that emptiness is deliberate: it is what lets UTF-16 encode characters beyond the first 65,536 by pairing two of them. The reservation is why a string can be valid Unicode and still contain something that is not a character, and why splitting text at an arbitrary index can produce a lone surrogate that no encoder will accept.
Factors & digit properties
- Divisors (48)
- 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 96, 108, 128, 144, 192, 216, 256, 288, 384, 432, 512, 576, 768, 864, 1024, 1152, 1536, 1728, 2048, 2304, 3072, 3456, 4608, 6144, 6912, 9216, 13824, 18432, 27648, 55296
- Prime factorisation
- 2^11 × 3^3
- Digit sum
- 27
- Digital root
- 9
Representations
- Decimal
- 55296
- Scientific notation
- 5.530 × 10^4
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0
1 × 32,768 + 1 × 16,384 + 0 × 8,192 + 1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 55,296
Octal
1 5 4 0 0 0
1 × 32,768 + 5 × 4,096 + 4 × 512 + 0 × 64 + 0 × 8 + 0 × 1 = 55,296
Hexadecimal
d 8 0 0
d × 4,096 + 8 × 256 + 0 × 16 + 0 × 1 = 55,296
Read as powers of two: 32,768 + 16,384 + 4,096 + 2,048 = 55,296.
In historical numeral systems
Egyptian
5 fingers, 5 lotuses, 2 coils of rope, 9 hobbles, 6 strokes
5 × 10,000 + 5 × 1,000 + 2 × 100 + 9 × 10 + 6 × 1 = 55,296. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
- Powerful number
- Harshad (Niven) number
Technology & computing
The first code point Unicode reserves for surrogates is 55,296. Nothing is ever assigned in the 2,048 code points from here, and that emptiness is what lets UTF-16 reach beyond 65,535 by pairing two of them. It is why a string can be valid Unicode and still contain something that is not a character.
DocumentedTechnology & computingGeography: worldwide
Common questions
Is 55,296 a prime number?
No, 55,296 is not prime.
What are the factors of 55,296?
The factors of 55,296 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 96, 108, 128, 144, 192, 216, 256, 288, 384, 432, 512, 576, 768, 864, 1024, 1152, 1536, 1728, 2048, 2304, 3072, 3456, 4608, 6144, 6912, 9216, 13824, 18432, 27648, 55296.
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