57155012 has 6 divisors (see below), whose sum is σ = 100021278. Its totient is φ = 28577504.

The previous prime is 57154997. The next prime is 57155029. The reversal of 57155012 is 21055175.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54671236 + 2483776 = 7394^2 + 1576^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7144373 + ... + 7144380.

It is an arithmetic number, because the mean of its divisors is an integer number (16670213).

Almost surely, 2^57155012 is an apocalyptic number.

It is an amenable number.

57155012 is a deficient number, since it is larger than the sum of its proper divisors (42866266).

57155012 is a wasteful number, since it uses less digits than its factorization.

57155012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288757 (or 14288755 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 57155012 is about 7560.0933856666. The cubic root of 57155012 is about 385.1986651078.

The spelling of 57155012 in words is "fifty-seven million, one hundred fifty-five thousand, twelve".