57531028 has 6 divisors (see below), whose sum is σ = 100679306. Its totient is φ = 28765512.

The previous prime is 57531017. The next prime is 57531037. The reversal of 57531028 is 82013575.

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 7997584 = 7038^2 + 2828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7191375 + ... + 7191382.

Almost surely, 2^57531028 is an apocalyptic number.

It is an amenable number.

57531028 is a deficient number, since it is larger than the sum of its proper divisors (43148278).

57531028 is a wasteful number, since it uses less digits than its factorization.

57531028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14382761 (or 14382759 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 57531028 is about 7584.9210938546. The cubic root of 57531028 is about 386.0415447423.

The spelling of 57531028 in words is "fifty-seven million, five hundred thirty-one thousand, twenty-eight".