| ||||
|---|---|---|---|---|
| Cardinal | sixty-one | |||
| Ordinal | 61st (sixty-first) | |||
| Factorization | prime | |||
| Prime | 18th | |||
| Divisors | 1, 61 | |||
| Greek numeral | ΞΑ´ | |||
| Roman numeral | LXI | |||
| Binary | 1111012 | |||
| Ternary | 20213 | |||
| Senary | 1416 | |||
| Octal | 758 | |||
| Duodecimal | 5112 | |||
| Hexadecimal | 3D16 | |||
61 (sixty-one) is the natural number following 60 and preceding 62.