57220208 has 20 divisors (see below), whose sum is σ = 111943728. Its totient is φ = 28331520.

The previous prime is 57220201. The next prime is 57220213. The reversal of 57220208 is 80202275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57220201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15713 + ... + 19008.

Almost surely, 2^57220208 is an apocalyptic number.

It is an amenable number.

57220208 is a deficient number, since it is larger than the sum of its proper divisors (54723520).

57220208 is a wasteful number, since it uses less digits than its factorization.

57220208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34832 (or 34826 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 57220208 is about 7564.4040082481. The cubic root of 57220208 is about 385.3450732033.

The spelling of 57220208 in words is "fifty-seven million, two hundred twenty thousand, two hundred eight".