57212536 has 32 divisors (see below), whose sum is σ = 111456000. Its totient is φ = 27512416.

The previous prime is 57212521. The next prime is 57212549. The reversal of 57212536 is 63521275.

It is a junction number, because it is equal to n+sod(n) for n = 57212498 and 57212507.

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, 20895 + ... + 23473.

It is an arithmetic number, because the mean of its divisors is an integer number (3483000).

Almost surely, 2^57212536 is an apocalyptic number.

It is an amenable number.

57212536 is a deficient number, since it is larger than the sum of its proper divisors (54243464).

57212536 is a wasteful number, since it uses less digits than its factorization.

57212536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2687 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 57212536 is about 7563.8968792548. The cubic root of 57212536 is about 385.3278502697.

The spelling of 57212536 in words is "fifty-seven million, two hundred twelve thousand, five hundred thirty-six".