57315560 has 64 divisors (see below), whose sum is σ = 134956800. Its totient is φ = 21885696.

The previous prime is 57315547. The next prime is 57315593. The reversal of 57315560 is 6551375.

It is a super-2 number, since 2×57315560² = 6570146836227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80486 + ... + 81194.

It is an arithmetic number, because the mean of its divisors is an integer number (2108700).

Almost surely, 2^57315560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57315560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67478400).

57315560 is an abundant number, since it is smaller than the sum of its proper divisors (77641240).

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

57315560 is a wasteful number, since it uses less digits than its factorization.

57315560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 57315560 is about 7570.7040623709. The cubic root of 57315560 is about 385.5590013112.

It can be divided in two parts, 57315 and 560, that added together give a palindrome (57875).

The spelling of 57315560 in words is "fifty-seven million, three hundred fifteen thousand, five hundred sixty".