115816515 has 8 divisors (see below), whose sum is σ = 185306448. Its totient is φ = 61768800.

The previous prime is 115816487. The next prime is 115816537. The reversal of 115816515 is 515618511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115816515 - 2⁶ = 115816451 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, 3860536 + ... + 3860565.

It is an arithmetic number, because the mean of its divisors is an integer number (23163306).

Almost surely, 2^115816515 is an apocalyptic number.

115816515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115816515 is a deficient number, since it is larger than the sum of its proper divisors (69489933).

115816515 is an equidigital number, since it uses as much as digits as its factorization.

115816515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721109.

The product of its digits is 6000, while the sum is 33.

The square root of 115816515 is about 10761.8081659171. The cubic root of 115816515 is about 487.4426178351.

The spelling of 115816515 in words is "one hundred fifteen million, eight hundred sixteen thousand, five hundred fifteen".