118155227 has 4 divisors (see below), whose sum is σ = 120669216. Its totient is φ = 115641240.

The previous prime is 118155223. The next prime is 118155263. The reversal of 118155227 is 722551811.

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

It is a cyclic number.

It is not a de Polignac number, because 118155227 - 2² = 118155223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118155193 and 118155202.

It is not an unprimeable number, because it can be changed into a prime (118155223) 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 3 ways as a sum of consecutive naturals, for example, 1256924 + ... + 1257017.

It is an arithmetic number, because the mean of its divisors is an integer number (30167304).

Almost surely, 2^118155227 is an apocalyptic number.

118155227 is a deficient number, since it is larger than the sum of its proper divisors (2513989).

118155227 is an equidigital number, since it uses as much as digits as its factorization.

118155227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513988.

The product of its digits is 5600, while the sum is 32.

The square root of 118155227 is about 10869.9230448058. The cubic root of 118155227 is about 490.7017946082.

The spelling of 118155227 in words is "one hundred eighteen million, one hundred fifty-five thousand, two hundred twenty-seven".