115512215 has 32 divisors (see below), whose sum is σ = 172032000. Its totient is φ = 72503424.

The previous prime is 115512193. The next prime is 115512217. The reversal of 115512215 is 512215511.

It is not a de Polignac number, because 115512215 - 2⁶ = 115512151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115512217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56786 + ... + 58784.

It is an arithmetic number, because the mean of its divisors is an integer number (5376000).

Almost surely, 2^115512215 is an apocalyptic number.

115512215 is a deficient number, since it is larger than the sum of its proper divisors (56519785).

115512215 is a wasteful number, since it uses less digits than its factorization.

115512215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its digits is 500, while the sum is 23.

The square root of 115512215 is about 10747.6609083093. The cubic root of 115512215 is about 487.0153359790.

Adding to 115512215 its reverse (512215511), we get a palindrome (627727726).

The spelling of 115512215 in words is "one hundred fifteen million, five hundred twelve thousand, two hundred fifteen".