56159797 has 2 divisors, whose sum is σ = 56159798. Its totient is φ = 56159796.

The previous prime is 56159771. The next prime is 56159809. The reversal of 56159797 is 79795165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44809636 + 11350161 = 6694^2 + 3369^2 .

It is a cyclic number.

It is not a de Polignac number, because 56159797 - 2⁷ = 56159669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56159797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56159297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28079898 + 28079899.

It is an arithmetic number, because the mean of its divisors is an integer number (28079899).

Almost surely, 2^56159797 is an apocalyptic number.

It is an amenable number.

56159797 is a deficient number, since it is larger than the sum of its proper divisors (1).

56159797 is an equidigital number, since it uses as much as digits as its factorization.

56159797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 595350, while the sum is 49.

The square root of 56159797 is about 7493.9840538928. The cubic root of 56159797 is about 382.9497965178.

The spelling of 56159797 in words is "fifty-six million, one hundred fifty-nine thousand, seven hundred ninety-seven".