12055155 has 64 divisors (see below), whose sum is σ = 23639040. Its totient is φ = 5128704.

The previous prime is 12055133. The next prime is 12055207. The reversal of 12055155 is 55155021.

It is not a de Polignac number, because 12055155 - 2⁵ = 12055123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112612 + ... + 112718.

It is an arithmetic number, because the mean of its divisors is an integer number (369360).

Almost surely, 2^12055155 is an apocalyptic number.

12055155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12055155 is a deficient number, since it is larger than the sum of its proper divisors (11583885).

12055155 is a wasteful number, since it uses less digits than its factorization.

12055155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 12055155 is about 3472.0534270083. The cubic root of 12055155 is about 229.2930720084.

The spelling of 12055155 in words is "twelve million, fifty-five thousand, one hundred fifty-five".