57012506 has 4 divisors (see below), whose sum is σ = 85518762. Its totient is φ = 28506252.

The previous prime is 57012499. The next prime is 57012517. The reversal of 57012506 is 60521075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 3591025 = 7309^2 + 1895^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14253125 + ... + 14253128.

Almost surely, 2^57012506 is an apocalyptic number.

57012506 is a deficient number, since it is larger than the sum of its proper divisors (28506256).

57012506 is a wasteful number, since it uses less digits than its factorization.

57012506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28506255.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 57012506 is about 7550.6626199295. The cubic root of 57012506 is about 384.8782568912.

The spelling of 57012506 in words is "fifty-seven million, twelve thousand, five hundred six".