115172517 has 8 divisors (see below), whose sum is σ = 153616320. Its totient is φ = 76755200.

The previous prime is 115172507. The next prime is 115172539. The reversal of 115172517 is 715271511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115172517 - 2⁷ = 115172389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115172507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392 + ... + 17342.

It is an arithmetic number, because the mean of its divisors is an integer number (19202040).

Almost surely, 2^115172517 is an apocalyptic number.

It is an amenable number.

115172517 is a deficient number, since it is larger than the sum of its proper divisors (38443803).

115172517 is an equidigital number, since it uses as much as digits as its factorization.

115172517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13243.

The product of its digits is 2450, while the sum is 30.

The square root of 115172517 is about 10731.8459269596. The cubic root of 115172517 is about 486.5374627820.

The spelling of 115172517 in words is "one hundred fifteen million, one hundred seventy-two thousand, five hundred seventeen".