115901515 has 8 divisors (see below), whose sum is σ = 139141728. Its totient is φ = 92681280.

The previous prime is 115901497. The next prime is 115901519. The reversal of 115901515 is 515109511.

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

It is not a de Polignac number, because 115901515 - 2⁹ = 115901003 is a prime.

It is a super-2 number, since 2×115901515² = 26866322358590450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115901519) 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, 15210 + ... + 21520.

It is an arithmetic number, because the mean of its divisors is an integer number (17392716).

Almost surely, 2^115901515 is an apocalyptic number.

115901515 is a deficient number, since it is larger than the sum of its proper divisors (23240213).

115901515 is an equidigital number, since it uses as much as digits as its factorization.

115901515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9989.

The product of its (nonzero) digits is 1125, while the sum is 28.

The square root of 115901515 is about 10765.7565920840. The cubic root of 115901515 is about 487.5618365567.

The spelling of 115901515 in words is "one hundred fifteen million, nine hundred one thousand, five hundred fifteen".