56790157 has 2 divisors, whose sum is σ = 56790158. Its totient is φ = 56790156.

The previous prime is 56790137. The next prime is 56790169. The reversal of 56790157 is 75109765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55636681 + 1153476 = 7459^2 + 1074^2 .

It is a cyclic number.

It is not a de Polignac number, because 56790157 - 2⁷ = 56790029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56790137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28395078 + 28395079.

It is an arithmetic number, because the mean of its divisors is an integer number (28395079).

Almost surely, 2^56790157 is an apocalyptic number.

It is an amenable number.

56790157 is a deficient number, since it is larger than the sum of its proper divisors (1).

56790157 is an equidigital number, since it uses as much as digits as its factorization.

56790157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 56790157 is about 7535.9244290266. The cubic root of 56790157 is about 384.3772627888.

The spelling of 56790157 in words is "fifty-six million, seven hundred ninety thousand, one hundred fifty-seven".