Primes / Is 57 prime?

Is 57 a Prime Number?

No57 = 3 x 19

57 is NOT prime: 3 × 19 = 57. That makes 3 a genuine divisor of 57 beyond 1 and 57 itself. Fully broken down, 57 = 3 × 19, for 4 divisors total. 57 sits between primes 53 and 59, 4 below and 2 above. 57: 3 divide 57 evenly, checked against 2-12. 57 is odd, digit sum 12 for 57, digital root 3 for 57. 57 has 5 primes within 10 of 57.