56506913 has 2 divisors, whose sum is σ = 56506914. Its totient is φ = 56506912.

The previous prime is 56506903. The next prime is 56506937. The reversal of 56506913 is 31960565.

56506913 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 can be written as a sum of positive squares in only one way, i.e., 30118144 + 26388769 = 5488^2 + 5137^2 .

It is a cyclic number.

It is not a de Polignac number, because 56506913 - 2¹⁴ = 56490529 is a prime.

It is not a weakly prime, because it can be changed into another prime (56506903) 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, 28253456 + 28253457.

It is an arithmetic number, because the mean of its divisors is an integer number (28253457).

Almost surely, 2^56506913 is an apocalyptic number.

It is an amenable number.

56506913 is a deficient number, since it is larger than the sum of its proper divisors (1).

56506913 is an equidigital number, since it uses as much as digits as its factorization.

56506913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 56506913 is about 7517.1080210411. The cubic root of 56506913 is about 383.7371632540.

The spelling of 56506913 in words is "fifty-six million, five hundred six thousand, nine hundred thirteen".