57222156 has 48 divisors (see below), whose sum is σ = 139281408. Its totient is φ = 18264000.

The previous prime is 57222089. The next prime is 57222157. The reversal of 57222156 is 65122275.

It is not an unprimeable number, because it can be changed into a prime (57222157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36811 + ... + 38333.

It is an arithmetic number, because the mean of its divisors is an integer number (2901696).

Almost surely, 2^57222156 is an apocalyptic number.

It is an amenable number.

57222156 is an abundant number, since it is smaller than the sum of its proper divisors (82059252).

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

57222156 is a wasteful number, since it uses less digits than its factorization.

57222156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662 (or 1660 counting only the distinct ones).

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

The square root of 57222156 is about 7564.5327681226. The cubic root of 57222156 is about 385.3494460389.

The spelling of 57222156 in words is "fifty-seven million, two hundred twenty-two thousand, one hundred fifty-six".