57503231 has 16 divisors (see below), whose sum is σ = 63037440. Its totient is φ = 52241280.

The previous prime is 57503227. The next prime is 57503269. The reversal of 57503231 is 13230575.

It is a cyclic number.

It is not a de Polignac number, because 57503231 - 2² = 57503227 is a prime.

It is a super-2 number, since 2×57503231² = 6613243150878722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57503231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57503221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62666 + ... + 63576.

It is an arithmetic number, because the mean of its divisors is an integer number (3939840).

Almost surely, 2^57503231 is an apocalyptic number.

57503231 is a deficient number, since it is larger than the sum of its proper divisors (5534209).

57503231 is a wasteful number, since it uses less digits than its factorization.

57503231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 57503231 is about 7583.0884868898. The cubic root of 57503231 is about 385.9793607585.

The spelling of 57503231 in words is "fifty-seven million, five hundred three thousand, two hundred thirty-one".