57475720 has 32 divisors (see below), whose sum is σ = 130014720. Its totient is φ = 22866880.

The previous prime is 57475711. The next prime is 57475721. The reversal of 57475720 is 2757475.

It is a self number, because there is not a number n which added to its sum of digits gives 57475720.

It is not an unprimeable number, because it can be changed into a prime (57475721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3879 + ... + 11401.

It is an arithmetic number, because the mean of its divisors is an integer number (4062960).

Almost surely, 2^57475720 is an apocalyptic number.

It is an amenable number.

57475720 is an abundant number, since it is smaller than the sum of its proper divisors (72539000).

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

57475720 is a wasteful number, since it uses less digits than its factorization.

57475720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725 (or 7721 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 57475720 is about 7581.2742992191. The cubic root of 57475720 is about 385.9177968436.

The spelling of 57475720 in words is "fifty-seven million, four hundred seventy-five thousand, seven hundred twenty".