115812815 has 16 divisors (see below), whose sum is σ = 141264000. Its totient is φ = 91133952.

The previous prime is 115812799. The next prime is 115812833. The reversal of 115812815 is 518218511.

It is a cyclic number.

It is not a de Polignac number, because 115812815 - 2⁴ = 115812799 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177029 + ... + 177681.

It is an arithmetic number, because the mean of its divisors is an integer number (8829000).

Almost surely, 2^115812815 is an apocalyptic number.

115812815 is a deficient number, since it is larger than the sum of its proper divisors (25451185).

115812815 is an equidigital number, since it uses as much as digits as its factorization.

115812815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its digits is 3200, while the sum is 32.

The square root of 115812815 is about 10761.6362603463. The cubic root of 115812815 is about 487.4374269896.

The spelling of 115812815 in words is "one hundred fifteen million, eight hundred twelve thousand, eight hundred fifteen".