117517157 has 4 divisors (see below), whose sum is σ = 117543936. Its totient is φ = 117490380.

The previous prime is 117517067. The next prime is 117517181. The reversal of 117517157 is 751715711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117517157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117517457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5093 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (29385984).

Almost surely, 2^117517157 is an apocalyptic number.

It is an amenable number.

117517157 is a deficient number, since it is larger than the sum of its proper divisors (26779).

117517157 is an equidigital number, since it uses as much as digits as its factorization.

117517157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26778.

The product of its digits is 8575, while the sum is 35.

The square root of 117517157 is about 10840.5330588491. The cubic root of 117517157 is about 489.8168925718.

The spelling of 117517157 in words is "one hundred seventeen million, five hundred seventeen thousand, one hundred fifty-seven".