91 (number)
Ninety-one is a number. It comes between ninety and ninety-two, and is an odd number. It is divisible by 1, 7, 13, and 91.
| ||||
|---|---|---|---|---|
| Cardinal | ninety-one | |||
| Ordinal | 91st (ninety-first) | |||
| Factorization | 7 · 13 | |||
| Roman numeral | XCI | |||
| Binary | 10110112 | |||
| Ternary | 101013 | |||
| Quaternary | 11234 | |||
| Quinary | 3315 | |||
| Senary | 2316 | |||
| Octal | 1338 | |||
| Duodecimal | 7712 | |||
| Hexadecimal | 5B16 | |||
| Vigesimal | 4B20 | |||
| Base 36 | 2J36 | |||
91 (number) Media
91 is a square pyramidal number.
91 is a centered hexagonal number.
91 as the sum and difference of two positive cubes
