57661516 has 12 divisors (see below), whose sum is σ = 110081160. Its totient is φ = 26209760.

The previous prime is 57661507. The next prime is 57661543. The reversal of 57661516 is 61516675.

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, 655201 + ... + 655288.

It is an arithmetic number, because the mean of its divisors is an integer number (9173430).

Almost surely, 2^57661516 is an apocalyptic number.

It is an amenable number.

57661516 is a deficient number, since it is larger than the sum of its proper divisors (52419644).

57661516 is a wasteful number, since it uses less digits than its factorization.

57661516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310504 (or 1310502 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 57661516 is about 7593.5180252634. The cubic root of 57661516 is about 386.3331888281. Note that the first 3 decimals are identical.

The spelling of 57661516 in words is "fifty-seven million, six hundred sixty-one thousand, five hundred sixteen".