56630311 has 2 divisors, whose sum is σ = 56630312. Its totient is φ = 56630310.

The previous prime is 56630303. The next prime is 56630323. The reversal of 56630311 is 11303665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56630311 - 2³ = 56630303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56630411) 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, 28315155 + 28315156.

It is an arithmetic number, because the mean of its divisors is an integer number (28315156).

Almost surely, 2^56630311 is an apocalyptic number.

56630311 is a deficient number, since it is larger than the sum of its proper divisors (1).

56630311 is an equidigital number, since it uses as much as digits as its factorization.

56630311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 56630311 is about 7525.3113556849. The cubic root of 56630311 is about 384.0162911744.

Adding to 56630311 its reverse (11303665), we get a palindrome (67933976).

The spelling of 56630311 in words is "fifty-six million, six hundred thirty thousand, three hundred eleven".