57472220 has 24 divisors (see below), whose sum is σ = 129976224. Its totient is φ = 21220416.

The previous prime is 57472183. The next prime is 57472231. The reversal of 57472220 is 2227475.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 110264 + ... + 110783.

It is an arithmetic number, because the mean of its divisors is an integer number (5415676).

Almost surely, 2^57472220 is an apocalyptic number.

It is an amenable number.

57472220 is an abundant number, since it is smaller than the sum of its proper divisors (72504004).

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

57472220 is a wasteful number, since it uses less digits than its factorization.

57472220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221069 (or 221067 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 57472220 is about 7581.0434637984. The cubic root of 57472220 is about 385.9099631606.

Adding to 57472220 its reverse (2227475), we get a palindrome (59699695).

The spelling of 57472220 in words is "fifty-seven million, four hundred seventy-two thousand, two hundred twenty".