56287251 has 16 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 37413864.

The previous prime is 56287223. The next prime is 56287261. The reversal of 56287251 is 15278265.

It is a happy number.

56287251 is a `hidden beast` number, since 5 + 628 + 7 + 25 + 1 = 666.

It is not a de Polignac number, because 56287251 - 2⁷ = 56287123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56287261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6790 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (5227200).

Almost surely, 2^56287251 is an apocalyptic number.

56287251 is a deficient number, since it is larger than the sum of its proper divisors (27347949).

56287251 is a wasteful number, since it uses less digits than its factorization.

56287251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175 (or 6169 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 56287251 is about 7502.4829889844. The cubic root of 56287251 is about 383.2392776593.

The spelling of 56287251 in words is "fifty-six million, two hundred eighty-seven thousand, two hundred fifty-one".