115135815 has 64 divisors (see below), whose sum is σ = 207277056. Its totient is φ = 54269952.

The previous prime is 115135807. The next prime is 115135817. The reversal of 115135815 is 518531511.

It is not a de Polignac number, because 115135815 - 2³ = 115135807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115135817) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392809 + ... + 393101.

It is an arithmetic number, because the mean of its divisors is an integer number (3238704).

Almost surely, 2^115135815 is an apocalyptic number.

115135815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115135815 is a deficient number, since it is larger than the sum of its proper divisors (92141241).

115135815 is a wasteful number, since it uses less digits than its factorization.

115135815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its digits is 3000, while the sum is 30.

The square root of 115135815 is about 10730.1358332502. The cubic root of 115135815 is about 486.4857756967.

The spelling of 115135815 in words is "one hundred fifteen million, one hundred thirty-five thousand, eight hundred fifteen".