56310251 has 2 divisors, whose sum is σ = 56310252. Its totient is φ = 56310250.

The previous prime is 56310139. The next prime is 56310253. The reversal of 56310251 is 15201365.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56310251 is a prime.

Together with 56310253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56310253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28155125 + 28155126.

It is an arithmetic number, because the mean of its divisors is an integer number (28155126).

Almost surely, 2^56310251 is an apocalyptic number.

56310251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56310251 is an equidigital number, since it uses as much as digits as its factorization.

56310251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 56310251 is about 7504.0156582992. The cubic root of 56310251 is about 383.2914700765.

The spelling of 56310251 in words is "fifty-six million, three hundred ten thousand, two hundred fifty-one".