57157222 has 16 divisors (see below), whose sum is σ = 86757840. Its totient is φ = 28240128.

The previous prime is 57157181. The next prime is 57157223. The reversal of 57157222 is 22275175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92029 + ... + 92647.

It is an arithmetic number, because the mean of its divisors is an integer number (5422365).

Almost surely, 2^57157222 is an apocalyptic number.

57157222 is a deficient number, since it is larger than the sum of its proper divisors (29600618).

57157222 is a wasteful number, since it uses less digits than its factorization.

57157222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its digits is 9800, while the sum is 31.

The square root of 57157222 is about 7560.2395464694. The cubic root of 57157222 is about 385.2036298406.

The spelling of 57157222 in words is "fifty-seven million, one hundred fifty-seven thousand, two hundred twenty-two".