157317513 has 16 divisors (see below), whose sum is σ = 211522752. Its totient is φ = 104000000.

The previous prime is 157317509. The next prime is 157317553. The reversal of 157317513 is 315713751.

It is a cyclic number.

It is not a de Polignac number, because 157317513 - 2² = 157317509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157317553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301693 + ... + 302213.

It is an arithmetic number, because the mean of its divisors is an integer number (13220172).

Almost surely, 2^157317513 is an apocalyptic number.

It is an amenable number.

157317513 is a deficient number, since it is larger than the sum of its proper divisors (54205239).

157317513 is a wasteful number, since it uses less digits than its factorization.

157317513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its digits is 11025, while the sum is 33.

The square root of 157317513 is about 12542.6278347083. The cubic root of 157317513 is about 539.8324960579.

The spelling of 157317513 in words is "one hundred fifty-seven million, three hundred seventeen thousand, five hundred thirteen".