57152520 has 64 divisors (see below), whose sum is σ = 190512000. Its totient is φ = 15240384.

The previous prime is 57152509. The next prime is 57152573. The reversal of 57152520 is 2525175.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 25380 + ... + 27539.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^57152520 is an apocalyptic number.

It is an amenable number.

57152520 is an abundant number, since it is smaller than the sum of its proper divisors (133359480).

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

57152520 is a wasteful number, since it uses less digits than its factorization.

57152520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52939 (or 52929 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 57152520 is about 7559.9285710911. The cubic root of 57152520 is about 385.1930667127.

Adding to 57152520 its reverse (2525175), we get a palindrome (59677695).

The spelling of 57152520 in words is "fifty-seven million, one hundred fifty-two thousand, five hundred twenty".