57156492 has 12 divisors (see below), whose sum is σ = 133365176. Its totient is φ = 19052160.

The previous prime is 57156413. The next prime is 57156493. The reversal of 57156492 is 29465175.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 57156492.

It is not an unprimeable number, because it can be changed into a prime (57156493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381509 + ... + 2381532.

Almost surely, 2^57156492 is an apocalyptic number.

It is an amenable number.

57156492 is an abundant number, since it is smaller than the sum of its proper divisors (76208684).

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

57156492 is a wasteful number, since it uses less digits than its factorization.

57156492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763048 (or 4763046 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 57156492 is about 7560.1912674217. The cubic root of 57156492 is about 385.2019899204.

The spelling of 57156492 in words is "fifty-seven million, one hundred fifty-six thousand, four hundred ninety-two".