57565812 has 48 divisors (see below), whose sum is σ = 140696640. Its totient is φ = 18294528.

The previous prime is 57565793. The next prime is 57565813. The reversal of 57565812 is 21856575.

It is a super-2 number, since 2×57565812² = 6627645422438688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57565813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27888 + ... + 29880.

It is an arithmetic number, because the mean of its divisors is an integer number (2931180).

Almost surely, 2^57565812 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 57565812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70348320).

57565812 is an abundant number, since it is smaller than the sum of its proper divisors (83130828).

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

57565812 is a wasteful number, since it uses less digits than its factorization.

57565812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2110 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 57565812 is about 7587.2137178282. The cubic root of 57565812 is about 386.1193309631.

The spelling of 57565812 in words is "fifty-seven million, five hundred sixty-five thousand, eight hundred twelve".