57251516 has 12 divisors (see below), whose sum is σ = 114503088. Its totient is φ = 24536352.

The previous prime is 57251507. The next prime is 57251521. The reversal of 57251516 is 61515275.

57251516 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022321 + ... + 1022376.

It is an arithmetic number, because the mean of its divisors is an integer number (9541924).

Almost surely, 2^57251516 is an apocalyptic number.

It is an amenable number.

57251516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57251516 is a wasteful number, since it uses less digits than its factorization.

57251516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044708 (or 2044706 counting only the distinct ones).

The product of its digits is 10500, while the sum is 32.

The square root of 57251516 is about 7566.4731546474. The cubic root of 57251516 is about 385.4153408256.

The spelling of 57251516 in words is "fifty-seven million, two hundred fifty-one thousand, five hundred sixteen".