57442166 has 4 divisors (see below), whose sum is σ = 86163252. Its totient is φ = 28721082.

The previous prime is 57442157. The next prime is 57442169. The reversal of 57442166 is 66124475.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57442169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14360540 + ... + 14360543.

It is an arithmetic number, because the mean of its divisors is an integer number (21540813).

Almost surely, 2^57442166 is an apocalyptic number.

57442166 is a deficient number, since it is larger than the sum of its proper divisors (28721086).

57442166 is a wasteful number, since it uses less digits than its factorization.

57442166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28721085.

The product of its digits is 40320, while the sum is 35.

The square root of 57442166 is about 7579.0610236361. The cubic root of 57442166 is about 385.8426833497.

The spelling of 57442166 in words is "fifty-seven million, four hundred forty-two thousand, one hundred sixty-six".