57171966 has 16 divisors (see below), whose sum is σ = 114426000. Its totient is φ = 19043648.

The previous prime is 57171953. The next prime is 57171991. The reversal of 57171966 is 66917175.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9250 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (7151625).

Almost surely, 2^57171966 is an apocalyptic number.

57171966 is an abundant number, since it is smaller than the sum of its proper divisors (57254034).

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

57171966 is a wasteful number, since it uses less digits than its factorization.

57171966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6843.

The product of its digits is 79380, while the sum is 42.

The square root of 57171966 is about 7561.2145849724. The cubic root of 57171966 is about 385.2367487469.

The spelling of 57171966 in words is "fifty-seven million, one hundred seventy-one thousand, nine hundred sixty-six".