Names of 45
| Nominal | 45 |
| Cardinal | forty-five |
| Ordinal | 45th |
| This number as US currency | forty-five dollars |
| Is 45 an odd number? | 45 is an odd number |
| Is 45 an even number? | 45 is NOT an even number |
| Is 45 a palindrome? | 45 is NOT a palindrome number |
| Is 45 a triangle number? | 45 is a triangle number |
45 in other Bases
| Base 2 (Binary) | 1011012 |
| Base 3 (Ternary) | 12003 |
| Base 4 (Quaternary) | 2314 |
| Base 5 (Quinary) | 1405 |
| Base 6 (Senary) | 1136 |
| Base 8 (Octal) | 558 |
| Base 12 (Duodecimal) | 3912 |
| Base 16 (Hexadecimal) | 2D16 |
| Base 20 (Vigesimal) | 2520 |
Primes and Factors tests for 45
| Is 45 a Prime Number? | 45 is NOT a prime |
| Is 45 a perfect number? | 45 is NOT a perfect number |
| Is 45 a Mersenne Prime? | 45 is NOT a Mersenne prime |
| Is 45 a Fermat Prime? | 45 is NOT a Fermat prime |
| Is 45 a Fibonacci Prime? | 45 is NOT a Fibonacci prime |
| Is 45 a Partition Prime? | 45 is NOT a Partition prime |
| Is 45 a Pell Prime? | 45 is NOT a Pell prime |
| Prime Factors | Prime factors of 45 |
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45 in other Numerals
| 45 in Roman Numeral | XLV |
| 45 in Chinese Numeral | 肆拾伍 |
| 45 in Egyptian Numeral | 𓎉𓏾 |
| 45 in Babylonian Numeral |  |
Roots and stuff for 45
| Is 45 a square number? | 45 is NOT a square number |
| Is 45 a cube number? | 45 is NOT a cube number |
| Square root of the number 45 | 6.7082039324994 |
| Cube root of the number 45 | 3.5568933044901 |
Recreational math for 45
| Number 45 reversed | 54 |
| Sum of the digits | 9 |
| No of digits | 2 |