56081717 has 2 divisors, whose sum is σ = 56081718. Its totient is φ = 56081716.

The previous prime is 56081687. The next prime is 56081723. The reversal of 56081717 is 71718065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54302161 + 1779556 = 7369^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 56081717 - 2⁶ = 56081653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56081777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28040858 + 28040859.

It is an arithmetic number, because the mean of its divisors is an integer number (28040859).

Almost surely, 2^56081717 is an apocalyptic number.

It is an amenable number.

56081717 is a deficient number, since it is larger than the sum of its proper divisors (1).

56081717 is an equidigital number, since it uses as much as digits as its factorization.

56081717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 56081717 is about 7488.7727298937. The cubic root of 56081717 is about 382.7722401542.

The spelling of 56081717 in words is "fifty-six million, eighty-one thousand, seven hundred seventeen".