12085155 has 24 divisors (see below), whose sum is σ = 21162960. Its totient is φ = 6379200.

The previous prime is 12085111. The next prime is 12085163. The reversal of 12085155 is 55158021.

It is not a de Polignac number, because 12085155 - 2⁹ = 12084643 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 3216 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (881790).

Almost surely, 2^12085155 is an apocalyptic number.

12085155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12085155 is a deficient number, since it is larger than the sum of its proper divisors (9077805).

12085155 is a wasteful number, since it uses less digits than its factorization.

12085155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771 (or 2768 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 12085155 is about 3476.3709525883. The cubic root of 12085155 is about 229.4831177865.

The spelling of 12085155 in words is "twelve million, eighty-five thousand, one hundred fifty-five".