57345816 has 32 divisors (see below), whose sum is σ = 156398400. Its totient is φ = 17377440.

The previous prime is 57345809. The next prime is 57345823. The reversal of 57345816 is 61854375.

It is an interprime number because it is at equal distance from previous prime (57345809) and next prime (57345823).

It is a super-2 number, since 2×57345816² = 6577085225411712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108346 + ... + 108873.

It is an arithmetic number, because the mean of its divisors is an integer number (4887450).

Almost surely, 2^57345816 is an apocalyptic number.

It is an amenable number.

57345816 is an abundant number, since it is smaller than the sum of its proper divisors (99052584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57345816 is a wasteful number, since it uses less digits than its factorization.

57345816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217239 (or 217235 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 57345816 is about 7572.7020276781. The cubic root of 57345816 is about 385.6268329267.

The spelling of 57345816 in words is "fifty-seven million, three hundred forty-five thousand, eight hundred sixteen".