57321616 has 20 divisors (see below), whose sum is σ = 121157424. Its totient is φ = 26055200.

The previous prime is 57321611. The next prime is 57321617. The reversal of 57321616 is 61612375.

It is not an unprimeable number, because it can be changed into a prime (57321611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162670 + ... + 163021.

Almost surely, 2^57321616 is an apocalyptic number.

It is an amenable number.

57321616 is an abundant number, since it is smaller than the sum of its proper divisors (63835808).

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

57321616 is a wasteful number, since it uses less digits than its factorization.

57321616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325710 (or 325704 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 57321616 is about 7571.1040146071. The cubic root of 57321616 is about 385.5725803061.

The spelling of 57321616 in words is "fifty-seven million, three hundred twenty-one thousand, six hundred sixteen".