56663251 has 2 divisors, whose sum is σ = 56663252. Its totient is φ = 56663250.

The previous prime is 56663249. The next prime is 56663273. The reversal of 56663251 is 15236665.

56663251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56663251 - 2¹ = 56663249 is a prime.

Together with 56663249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56663231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28331625 + 28331626.

It is an arithmetic number, because the mean of its divisors is an integer number (28331626).

Almost surely, 2^56663251 is an apocalyptic number.

56663251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56663251 is an equidigital number, since it uses as much as digits as its factorization.

56663251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 56663251 is about 7527.4996512786. The cubic root of 56663251 is about 384.0907333156.

The spelling of 56663251 in words is "fifty-six million, six hundred sixty-three thousand, two hundred fifty-one".