56512251 has 24 divisors (see below), whose sum is σ = 86224320. Its totient is φ = 35567856.

The previous prime is 56512243. The next prime is 56512343. The reversal of 56512251 is 15221565.

56512251 is a `hidden beast` number, since 5 + 651 + 2 + 2 + 5 + 1 = 666.

It is not a de Polignac number, because 56512251 - 2³ = 56512243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56512201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95980 + ... + 96566.

It is an arithmetic number, because the mean of its divisors is an integer number (3592680).

Almost surely, 2^56512251 is an apocalyptic number.

56512251 is a deficient number, since it is larger than the sum of its proper divisors (29712069).

56512251 is a wasteful number, since it uses less digits than its factorization.

56512251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1172 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 56512251 is about 7517.4630694138. The cubic root of 56512251 is about 383.7492462858.

The spelling of 56512251 in words is "fifty-six million, five hundred twelve thousand, two hundred fifty-one".