715857137 has 2 divisors, whose sum is σ = 715857138. Its totient is φ = 715857136.

The previous prime is 715857073. The next prime is 715857161. The reversal of 715857137 is 731758517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537126976 + 178730161 = 23176^2 + 13369^2 .

It is a cyclic number.

It is not a de Polignac number, because 715857137 - 2⁶ = 715857073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (715856137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357928568 + 357928569.

It is an arithmetic number, because the mean of its divisors is an integer number (357928569).

Almost surely, 2^715857137 is an apocalyptic number.

It is an amenable number.

715857137 is a deficient number, since it is larger than the sum of its proper divisors (1).

715857137 is an equidigital number, since it uses as much as digits as its factorization.

715857137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205800, while the sum is 44.

The square root of 715857137 is about 26755.5066668527. The cubic root of 715857137 is about 894.5585817811.

The spelling of 715857137 in words is "seven hundred fifteen million, eight hundred fifty-seven thousand, one hundred thirty-seven".