57166216 has 16 divisors (see below), whose sum is σ = 107268300. Its totient is φ = 28561344.

The previous prime is 57166199. The next prime is 57166229. The reversal of 57166216 is 61266175.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53728900 + 3437316 = 7330^2 + 1854^2 .

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, 16090 + ... + 19318.

Almost surely, 2^57166216 is an apocalyptic number.

It is an amenable number.

57166216 is a deficient number, since it is larger than the sum of its proper divisors (50102084).

57166216 is a wasteful number, since it uses less digits than its factorization.

57166216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448 (or 5444 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 57166216 is about 7560.8343454939. The cubic root of 57166216 is about 385.2238334102.

The spelling of 57166216 in words is "fifty-seven million, one hundred sixty-six thousand, two hundred sixteen".