57231 has 6 divisors (see below), whose sum is σ = 82680. Its totient is φ = 38148.

The previous prime is 57223. The next prime is 57241. The reversal of 57231 is 13275.

It is not a de Polignac number, because 57231 - 2³ = 57223 is a prime.

It is a super-2 number, since 2×57231² = 6550774722, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3171 + ... + 3188.

It is an arithmetic number, because the mean of its divisors is an integer number (13780).

2⁵⁷²³¹ is an apocalyptic number.

57231 is a deficient number, since it is larger than the sum of its proper divisors (25449).

57231 is a wasteful number, since it uses less digits than its factorization.

57231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6365 (or 6362 counting only the distinct ones).

The product of its digits is 210, while the sum is 18.

The square root of 57231 is about 239.2300148393. The cubic root of 57231 is about 38.5369297644.

Subtracting from 57231 its reverse (13275), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 57231 in words is "fifty-seven thousand, two hundred thirty-one".