115961215 has 8 divisors (see below), whose sum is σ = 140717520. Its totient is φ = 91726272.

The previous prime is 115961207. The next prime is 115961221. The reversal of 115961215 is 512169511.

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 115961215 - 2³ = 115961207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129849 + ... + 130738.

It is an arithmetic number, because the mean of its divisors is an integer number (17589690).

Almost surely, 2^115961215 is an apocalyptic number.

115961215 is a deficient number, since it is larger than the sum of its proper divisors (24756305).

115961215 is an equidigital number, since it uses as much as digits as its factorization.

115961215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260681.

The product of its digits is 2700, while the sum is 31.

The square root of 115961215 is about 10768.5289153161. The cubic root of 115961215 is about 487.6455353343.

The spelling of 115961215 in words is "one hundred fifteen million, nine hundred sixty-one thousand, two hundred fifteen".