157715307 has 24 divisors (see below), whose sum is σ = 243721296. Its totient is φ = 97929216.

The previous prime is 157715303. The next prime is 157715309. The reversal of 157715307 is 703517751.

It is a happy number.

157715307 is a `hidden beast` number, since 1 + 57 + 71 + 530 + 7 = 666.

It is not a de Polignac number, because 157715307 - 2² = 157715303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157715303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9528 + ... + 20154.

It is an arithmetic number, because the mean of its divisors is an integer number (10155054).

Almost surely, 2^157715307 is an apocalyptic number.

157715307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

157715307 is a deficient number, since it is larger than the sum of its proper divisors (86005989).

157715307 is a wasteful number, since it uses less digits than its factorization.

157715307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747 (or 10744 counting only the distinct ones).

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

The square root of 157715307 is about 12558.4755046144. The cubic root of 157715307 is about 540.2871209717.

The spelling of 157715307 in words is "one hundred fifty-seven million, seven hundred fifteen thousand, three hundred seven".