56511113 has 2 divisors, whose sum is σ = 56511114. Its totient is φ = 56511112.

The previous prime is 56511107. The next prime is 56511139. The reversal of 56511113 is 31111565.

56511113 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., 35378704 + 21132409 = 5948^2 + 4597^2 .

It is a cyclic number.

It is not a de Polignac number, because 56511113 - 2⁴ = 56511097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56511163) 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, 28255556 + 28255557.

It is an arithmetic number, because the mean of its divisors is an integer number (28255557).

Almost surely, 2^56511113 is an apocalyptic number.

It is an amenable number.

56511113 is a deficient number, since it is larger than the sum of its proper divisors (1).

56511113 is an equidigital number, since it uses as much as digits as its factorization.

56511113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 23.

The square root of 56511113 is about 7517.3873786044. The cubic root of 56511113 is about 383.7466703867.

Adding to 56511113 its reverse (31111565), we get a palindrome (87622678).

The spelling of 56511113 in words is "fifty-six million, five hundred eleven thousand, one hundred thirteen".