115111755 has 24 divisors (see below), whose sum is σ = 217666800. Its totient is φ = 55811520.

The previous prime is 115111753. The next prime is 115111781. The reversal of 115111755 is 557111511.

It is a happy number.

It is not a de Polignac number, because 115111755 - 2¹ = 115111753 is a prime.

It is a super-2 number, since 2×115111755² = 26501432278360050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115111753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115780 + ... + 116769.

It is an arithmetic number, because the mean of its divisors is an integer number (9069450).

Almost surely, 2^115111755 is an apocalyptic number.

115111755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115111755 is a deficient number, since it is larger than the sum of its proper divisors (102555045).

115111755 is a wasteful number, since it uses less digits than its factorization.

115111755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232571 (or 232568 counting only the distinct ones).

The product of its digits is 875, while the sum is 27.

The square root of 115111755 is about 10729.0146332270. The cubic root of 115111755 is about 486.4518862617.

The spelling of 115111755 in words is "one hundred fifteen million, one hundred eleven thousand, seven hundred fifty-five".