115516155 has 16 divisors (see below), whose sum is σ = 185163264. Its totient is φ = 61496160.

The previous prime is 115516153. The next prime is 115516157. The reversal of 115516155 is 551615511.

It is an interprime number because it is at equal distance from previous prime (115516153) and next prime (115516157).

It is not a de Polignac number, because 115516155 - 2¹ = 115516153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115516153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822 + ... + 15308.

It is an arithmetic number, because the mean of its divisors is an integer number (11572704).

Almost surely, 2^115516155 is an apocalyptic number.

115516155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115516155 is a deficient number, since it is larger than the sum of its proper divisors (69647109).

115516155 is a wasteful number, since it uses less digits than its factorization.

115516155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14066.

The product of its digits is 3750, while the sum is 30.

The square root of 115516155 is about 10747.8442024436. The cubic root of 115516155 is about 487.0208731094.

The spelling of 115516155 in words is "one hundred fifteen million, five hundred sixteen thousand, one hundred fifty-five".