57731568 has 20 divisors (see below), whose sum is σ = 149140008. Its totient is φ = 19243840.

The previous prime is 57731561. The next prime is 57731593. The reversal of 57731568 is 86513775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57731561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601323 + ... + 601418.

Almost surely, 2^57731568 is an apocalyptic number.

It is an amenable number.

57731568 is an abundant number, since it is smaller than the sum of its proper divisors (91408440).

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

57731568 is a wasteful number, since it uses less digits than its factorization.

57731568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202752 (or 1202746 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 57731568 is about 7598.1292434388. The cubic root of 57731568 is about 386.4895753991.

The spelling of 57731568 in words is "fifty-seven million, seven hundred thirty-one thousand, five hundred sixty-eight".