57198220 has 24 divisors (see below), whose sum is σ = 120304800. Its totient is φ = 22843392.

The previous prime is 57198209. The next prime is 57198221. The reversal of 57198220 is 2289175.

It is not an unprimeable number, because it can be changed into a prime (57198221) 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, 13521 + ... + 17239.

It is an arithmetic number, because the mean of its divisors is an integer number (5012700).

Almost surely, 2^57198220 is an apocalyptic number.

It is an amenable number.

57198220 is an abundant number, since it is smaller than the sum of its proper divisors (63106580).

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

57198220 is a wasteful number, since it uses less digits than its factorization.

57198220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497 (or 4495 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 57198220 is about 7562.9504824506. The cubic root of 57198220 is about 385.2957080501.

The spelling of 57198220 in words is "fifty-seven million, one hundred ninety-eight thousand, two hundred twenty".