57555556 has 12 divisors (see below), whose sum is σ = 101023468. Its totient is φ = 28691712.

The previous prime is 57555551. The next prime is 57555559. The reversal of 57555556 is 65555575.

It can be written as a sum of positive squares in 2 ways, for example, as 11451456 + 46104100 = 3384^2 + 6790^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (57555551) 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, 20001 + ... + 22696.

Almost surely, 2^57555556 is an apocalyptic number.

It is an amenable number.

57555556 is a deficient number, since it is larger than the sum of its proper divisors (43467912).

57555556 is a wasteful number, since it uses less digits than its factorization.

57555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43038 (or 43036 counting only the distinct ones).

The product of its digits is 656250, while the sum is 43.

The square root of 57555556 is about 7586.5378137857. The cubic root of 57555556 is about 386.0963990936.

It can be divided in two parts, 5755 and 5556, that added together give a palindrome (11311).

The spelling of 57555556 in words is "fifty-seven million, five hundred fifty-five thousand, five hundred fifty-six".