715307157 has 6 divisors (see below), whose sum is σ = 1033221462. Its totient is φ = 476871432.

The previous prime is 715307143. The next prime is 715307161. The reversal of 715307157 is 751703517.

It is a happy number.

715307157 is a `hidden beast` number, since 7 + 1 + 530 + 71 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 562685841 + 152621316 = 23721^2 + 12354^2 .

It is not a de Polignac number, because 715307157 - 2⁶ = 715307093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715307357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39739278 + ... + 39739295.

It is an arithmetic number, because the mean of its divisors is an integer number (172203577).

Almost surely, 2^715307157 is an apocalyptic number.

It is an amenable number.

715307157 is a deficient number, since it is larger than the sum of its proper divisors (317914305).

715307157 is a wasteful number, since it uses less digits than its factorization.

715307157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79478579 (or 79478576 counting only the distinct ones).

The product of its (nonzero) digits is 25725, while the sum is 36.

The square root of 715307157 is about 26745.2268077876. The cubic root of 715307157 is about 894.3294320655.

It can be divided in two parts, 71530 and 7157, that added together give a palindrome (78687).

The spelling of 715307157 in words is "seven hundred fifteen million, three hundred seven thousand, one hundred fifty-seven".