57111066 has 12 divisors (see below), whose sum is σ = 123740682. Its totient is φ = 19037016.

The previous prime is 57111031. The next prime is 57111079. The reversal of 57111066 is 66011175.

It can be written as a sum of positive squares in only one way, i.e., 56927025 + 184041 = 7545^2 + 429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1586401 + ... + 1586436.

Almost surely, 2^57111066 is an apocalyptic number.

57111066 is an abundant number, since it is smaller than the sum of its proper divisors (66629616).

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

57111066 is a wasteful number, since it uses less digits than its factorization.

57111066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172845 (or 3172842 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 57111066 is about 7557.1863811871. The cubic root of 57111066 is about 385.0999144741.

The spelling of 57111066 in words is "fifty-seven million, one hundred eleven thousand, sixty-six".