115966155 has 32 divisors (see below), whose sum is σ = 191453184. Its totient is φ = 59907456.

The previous prime is 115966127. The next prime is 115966159. The reversal of 115966155 is 551669511.

It is not a de Polignac number, because 115966155 - 2¹⁸ = 115704011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115966159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71817 + ... + 73413.

It is an arithmetic number, because the mean of its divisors is an integer number (5982912).

Almost surely, 2^115966155 is an apocalyptic number.

115966155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115966155 is a deficient number, since it is larger than the sum of its proper divisors (75487029).

115966155 is a wasteful number, since it uses less digits than its factorization.

115966155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755.

The product of its digits is 40500, while the sum is 39.

The square root of 115966155 is about 10768.7582849649. The cubic root of 115966155 is about 487.6524598758.

The spelling of 115966155 in words is "one hundred fifteen million, nine hundred sixty-six thousand, one hundred fifty-five".