No, 54 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
54 has divisors other than 1 and itself. The smallest is 2: 54 ÷ 2 = 27.
Prime factorization: 54 = 2 × 3 × 3 × 3 = 2 × 3³.
| Number | Prime? |
|---|---|
| 50 | No, 2 × 5 × 5 |
| 51 | No, 3 × 17 |
| 52 | No, 2 × 2 × 13 |
| 53 | Yes |
| 55 | No, 5 × 11 |
| 56 | No, 2 × 2 × 2 × 7 |
| 57 | No, 3 × 19 |
| 58 | No, 2 × 29 |
More about 54: factors of 54 · 54 squared · square root of 54 · 54 in binary · 54 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.