56690251 has 2 divisors, whose sum is σ = 56690252. Its totient is φ = 56690250.

The previous prime is 56690237. The next prime is 56690269. The reversal of 56690251 is 15209665.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56690251 - 2⁹ = 56689739 is a prime.

It is not a weakly prime, because it can be changed into another prime (56690201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28345125 + 28345126.

It is an arithmetic number, because the mean of its divisors is an integer number (28345126).

Almost surely, 2^56690251 is an apocalyptic number.

56690251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56690251 is an equidigital number, since it uses as much as digits as its factorization.

56690251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 56690251 is about 7529.2928618828. The cubic root of 56690251 is about 384.1517299515.

The spelling of 56690251 in words is "fifty-six million, six hundred ninety thousand, two hundred fifty-one".