57012156 has 18 divisors (see below), whose sum is σ = 144114152. Its totient is φ = 19004040.

The previous prime is 57012143. The next prime is 57012157. The reversal of 57012156 is 65121075.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57012157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 791800 + ... + 791871.

Almost surely, 2^57012156 is an apocalyptic number.

It is an amenable number.

57012156 is an abundant number, since it is smaller than the sum of its proper divisors (87101996).

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

57012156 is a wasteful number, since it uses less digits than its factorization.

57012156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583681 (or 1583676 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 57012156 is about 7550.6394431200. The cubic root of 57012156 is about 384.8774692999.

The spelling of 57012156 in words is "fifty-seven million, twelve thousand, one hundred fifty-six".