57396520 has 16 divisors (see below), whose sum is σ = 129142260. Its totient is φ = 22958592.

The previous prime is 57396503. The next prime is 57396527. The reversal of 57396520 is 2569375.

It can be written as a sum of positive squares in 2 ways, for example, as 54375876 + 3020644 = 7374^2 + 1738^2 .

It is a super-2 number, since 2×57396520² = 6588721016220800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57396520.

It is not an unprimeable number, because it can be changed into a prime (57396527) 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, 717417 + ... + 717496.

Almost surely, 2^57396520 is an apocalyptic number.

It is an amenable number.

57396520 is an abundant number, since it is smaller than the sum of its proper divisors (71745740).

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

57396520 is a wasteful number, since it uses less digits than its factorization.

57396520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434924 (or 1434920 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 57396520 is about 7576.0491022696. The cubic root of 57396520 is about 385.7404539043.

The spelling of 57396520 in words is "fifty-seven million, three hundred ninety-six thousand, five hundred twenty".