115172115 has 16 divisors (see below), whose sum is σ = 185085600. Its totient is φ = 61155072.

The previous prime is 115172107. The next prime is 115172117. The reversal of 115172115 is 511271511.

It is not a de Polignac number, because 115172115 - 2³ = 115172107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115172117) 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, 13330 + ... + 20199.

It is an arithmetic number, because the mean of its divisors is an integer number (11567850).

Almost surely, 2^115172115 is an apocalyptic number.

115172115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115172115 is a deficient number, since it is larger than the sum of its proper divisors (69913485).

115172115 is a wasteful number, since it uses less digits than its factorization.

115172115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33766.

The product of its digits is 350, while the sum is 24.

The square root of 115172115 is about 10731.8271976397. The cubic root of 115172115 is about 486.5368967086.

The spelling of 115172115 in words is "one hundred fifteen million, one hundred seventy-two thousand, one hundred fifteen".