56720159 has 2 divisors, whose sum is σ = 56720160. Its totient is φ = 56720158.

The previous prime is 56720113. The next prime is 56720171. The reversal of 56720159 is 95102765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56720159 - 2⁸ = 56719903 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 (56720189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28360079 + 28360080.

It is an arithmetic number, because the mean of its divisors is an integer number (28360080).

Almost surely, 2^56720159 is an apocalyptic number.

56720159 is a deficient number, since it is larger than the sum of its proper divisors (1).

56720159 is an equidigital number, since it uses as much as digits as its factorization.

56720159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 56720159 is about 7531.2787094888. The cubic root of 56720159 is about 384.2192735466.

The spelling of 56720159 in words is "fifty-six million, seven hundred twenty thousand, one hundred fifty-nine".