56159749 has 2 divisors, whose sum is σ = 56159750. Its totient is φ = 56159748.

The previous prime is 56159729. The next prime is 56159759. The reversal of 56159749 is 94795165.

56159749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52099524 + 4060225 = 7218^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 56159749 - 2⁹ = 56159237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56159699 and 56159708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56159729) 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, 28079874 + 28079875.

It is an arithmetic number, because the mean of its divisors is an integer number (28079875).

Almost surely, 2^56159749 is an apocalyptic number.

It is an amenable number.

56159749 is a deficient number, since it is larger than the sum of its proper divisors (1).

56159749 is an equidigital number, since it uses as much as digits as its factorization.

56159749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 46.

The square root of 56159749 is about 7493.9808513233. The cubic root of 56159749 is about 382.9496874149.

The spelling of 56159749 in words is "fifty-six million, one hundred fifty-nine thousand, seven hundred forty-nine".