Number
255
255 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 12
- Digital root
- 3
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 432
Primality
Prime factorization: 3 × 5 × 17
Divisors & multiples
Aliquot sum (sum of proper divisors):
177
Representations
- In words
- two hundred fifty-five
- Ordinal
- 255th
- Roman numeral
- CCLV
- Binary
- 11111111
- Octal
- 377
- Hexadecimal
- FF
Also seen as
Unicode codepoint
ÿ
U+00FF
Lowercase letter (Ll)
UTF-8 encoding: C3 BF (2 bytes).
Hex color
#0000FF
RGB(0, 0, 255)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.255.