57531344 has 20 divisors (see below), whose sum is σ = 120041796. Its totient is φ = 26552832.

The previous prime is 57531343. The next prime is 57531347. The reversal of 57531344 is 44313575.

It can be written as a sum of positive squares in 2 ways, for example, as 21049744 + 36481600 = 4588^2 + 6040^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57531344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57531343) 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, 138089 + ... + 138504.

Almost surely, 2^57531344 is an apocalyptic number.

It is an amenable number.

57531344 is an abundant number, since it is smaller than the sum of its proper divisors (62510452).

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

57531344 is a wasteful number, since it uses less digits than its factorization.

57531344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276614 (or 276608 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 57531344 is about 7584.9419246294. The cubic root of 57531344 is about 386.0422515429.

It can be divided in two parts, 57531 and 344, that added together give a palindrome (57875).

The spelling of 57531344 in words is "fifty-seven million, five hundred thirty-one thousand, three hundred forty-four".