115915 has 8 divisors (see below), whose sum is σ = 141120. Its totient is φ = 91392.

The previous prime is 115903. The next prime is 115931. The reversal of 115915 is 519511.

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 115915 - 2⁵ = 115883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366 + ... + 604.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2¹¹⁵⁹¹⁵ is an apocalyptic number.

115915 is a deficient number, since it is larger than the sum of its proper divisors (25205).

115915 is an equidigital number, since it uses as much as digits as its factorization.

115915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its digits is 225, while the sum is 22.

The square root of 115915 is about 340.4629201543. The cubic root of 115915 is about 48.7580744899.

The spelling of 115915 in words is "one hundred fifteen thousand, nine hundred fifteen".