115128055 has 16 divisors (see below), whose sum is σ = 159796224. Its totient is φ = 77991840.

The previous prime is 115128047. The next prime is 115128059. The reversal of 115128055 is 550821511.

It is not a de Polignac number, because 115128055 - 2³ = 115128047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115128059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16911 + ... + 22720.

It is an arithmetic number, because the mean of its divisors is an integer number (9987264).

Almost surely, 2^115128055 is an apocalyptic number.

115128055 is a deficient number, since it is larger than the sum of its proper divisors (44668169).

115128055 is an equidigital number, since it uses as much as digits as its factorization.

115128055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39726.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 115128055 is about 10729.7742287524. The cubic root of 115128055 is about 486.4748459542.

Adding to 115128055 its reverse (550821511), we get a palindrome (665949566).

The spelling of 115128055 in words is "one hundred fifteen million, one hundred twenty-eight thousand, fifty-five".