56113513 has 2 divisors, whose sum is σ = 56113514. Its totient is φ = 56113512.

The previous prime is 56113511. The next prime is 56113529. The reversal of 56113513 is 31531165.

56113513 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., 51652969 + 4460544 = 7187^2 + 2112^2 .

It is a cyclic number.

It is not a de Polignac number, because 56113513 - 2¹ = 56113511 is a prime.

Together with 56113511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56113511) 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, 28056756 + 28056757.

It is an arithmetic number, because the mean of its divisors is an integer number (28056757).

Almost surely, 2^56113513 is an apocalyptic number.

It is an amenable number.

56113513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56113513 is an equidigital number, since it uses as much as digits as its factorization.

56113513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 56113513 is about 7490.8953403448. The cubic root of 56113513 is about 382.8445651319.

Adding to 56113513 its reverse (31531165), we get a palindrome (87644678).

It can be divided in two parts, 56 and 113513, that added together give a square (113569 = 337²).

The spelling of 56113513 in words is "fifty-six million, one hundred thirteen thousand, five hundred thirteen".