12155156 has 18 divisors (see below), whose sum is σ = 23034942. Its totient is φ = 5609760.

The previous prime is 12155137. The next prime is 12155159. The reversal of 12155156 is 65155121.

12155156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1488400 + 10666756 = 1220^2 + 3266^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8315 + ... + 9666.

It is an arithmetic number, because the mean of its divisors is an integer number (1279719).

Almost surely, 2^12155156 is an apocalyptic number.

It is an amenable number.

12155156 is a deficient number, since it is larger than the sum of its proper divisors (10879786).

12155156 is a wasteful number, since it uses less digits than its factorization.

12155156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18011 (or 17996 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 12155156 is about 3486.4245295144. The cubic root of 12155156 is about 229.9253443902.

The spelling of 12155156 in words is "twelve million, one hundred fifty-five thousand, one hundred fifty-six".