57120556 has 24 divisors (see below), whose sum is σ = 101621520. Its totient is φ = 28089600.

The previous prime is 57120533. The next prime is 57120571. The reversal of 57120556 is 65502175.

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, 99751 + ... + 100321.

It is an arithmetic number, because the mean of its divisors is an integer number (4234230).

Almost surely, 2^57120556 is an apocalyptic number.

It is an amenable number.

57120556 is a deficient number, since it is larger than the sum of its proper divisors (44500964).

57120556 is a wasteful number, since it uses less digits than its factorization.

57120556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 57120556 is about 7557.8142342876. The cubic root of 57120556 is about 385.1212436492.

It can be divided in two parts, 571 and 20556, that multiplied together give a square (11737476 = 3426²).

The spelling of 57120556 in words is "fifty-seven million, one hundred twenty thousand, five hundred fifty-six".