56513617 has 2 divisors, whose sum is σ = 56513618. Its totient is φ = 56513616.

The previous prime is 56513591. The next prime is 56513671. The reversal of 56513617 is 71631565.

56513617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (56513671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49336576 + 7177041 = 7024^2 + 2679^2 .

It is a cyclic number.

It is not a de Polignac number, because 56513617 - 2¹⁵ = 56480849 is a prime.

It is not a weakly prime, because it can be changed into another prime (56513687) 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, 28256808 + 28256809.

It is an arithmetic number, because the mean of its divisors is an integer number (28256809).

Almost surely, 2^56513617 is an apocalyptic number.

It is an amenable number.

56513617 is a deficient number, since it is larger than the sum of its proper divisors (1).

56513617 is an equidigital number, since it uses as much as digits as its factorization.

56513617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 56513617 is about 7517.5539239835. The cubic root of 56513617 is about 383.7523382245.

The spelling of 56513617 in words is "fifty-six million, five hundred thirteen thousand, six hundred seventeen".