57031497 has 12 divisors (see below), whose sum is σ = 82688580. Its totient is φ = 37878048.

The previous prime is 57031493. The next prime is 57031501. The reversal of 57031497 is 79413075.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57031493) and next prime (57031501).

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 55711296 = 1149^2 + 7464^2 .

It is not a de Polignac number, because 57031497 - 2² = 57031493 is a prime.

It is a super-2 number, since 2×57031497² = 6505183300122018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57031493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9358 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (6890715).

Almost surely, 2^57031497 is an apocalyptic number.

It is an amenable number.

57031497 is a deficient number, since it is larger than the sum of its proper divisors (25657083).

57031497 is a wasteful number, since it uses less digits than its factorization.

57031497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23832 (or 23829 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 57031497 is about 7551.9200869713. The cubic root of 57031497 is about 384.9209867650.

The spelling of 57031497 in words is "fifty-seven million, thirty-one thousand, four hundred ninety-seven".