118256155 has 4 divisors (see below), whose sum is σ = 141907392. Its totient is φ = 94604920.

The previous prime is 118256147. The next prime is 118256191. The reversal of 118256155 is 551652811.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 118256155 - 2³ = 118256147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118256155.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11825611 + ... + 11825620.

It is an arithmetic number, because the mean of its divisors is an integer number (35476848).

Almost surely, 2^118256155 is an apocalyptic number.

118256155 is a deficient number, since it is larger than the sum of its proper divisors (23651237).

118256155 is an equidigital number, since it uses as much as digits as its factorization.

118256155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23651236.

The product of its digits is 12000, while the sum is 34.

The square root of 118256155 is about 10874.5645889847. The cubic root of 118256155 is about 490.8414737324.

The spelling of 118256155 in words is "one hundred eighteen million, two hundred fifty-six thousand, one hundred fifty-five".