Number
155
155 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 11
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 192
Primality
Prime factorization: 5 × 31
Divisors & multiples
Aliquot sum (sum of proper divisors):
37
Representations
- In words
- one hundred fifty-five
- Ordinal
- 155th
- Roman numeral
- CLV
- Binary
- 10011011
- Octal
- 233
- Hexadecimal
- 9B
Also seen as
Unicode codepoint
U+009B
Control character (Cc)
UTF-8 encoding: C2 9B (2 bytes).
Hex color
#00009B
RGB(0, 0, 155)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.155.