| ||||
|---|---|---|---|---|
| Cardinal | forty-five | |||
| Ordinal | 45th (forty-fifth) | |||
| Factorization | 32 × 5 | |||
| Divisors | 1, 3, 5, 9, 15, 45 | |||
| Greek numeral | ΜΕ´ | |||
| Roman numeral | XLV | |||
| Binary | 1011012 | |||
| Ternary | 12003 | |||
| Senary | 1136 | |||
| Octal | 558 | |||
| Duodecimal | 3912 | |||
| Hexadecimal | 2D16 | |||
45 (forty-five) is the natural number following 44 and preceding 46.