57165222 has 16 divisors (see below), whose sum is σ = 117420912. Its totient is φ = 18540000.

The previous prime is 57165211. The next prime is 57165239. The reversal of 57165222 is 22256175.

It is a self number, because there is not a number n which added to its sum of digits gives 57165222.

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, 128529 + ... + 128972.

It is an arithmetic number, because the mean of its divisors is an integer number (7338807).

Almost surely, 2^57165222 is an apocalyptic number.

57165222 is an abundant number, since it is smaller than the sum of its proper divisors (60255690).

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

57165222 is a wasteful number, since it uses less digits than its factorization.

57165222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257543.

The product of its digits is 8400, while the sum is 30.

The square root of 57165222 is about 7560.7686117220. The cubic root of 57165222 is about 385.2216006538.

The spelling of 57165222 in words is "fifty-seven million, one hundred sixty-five thousand, two hundred twenty-two".