12055145 has 4 divisors (see below), whose sum is σ = 14466180. Its totient is φ = 9644112.

The previous prime is 12055133. The next prime is 12055207. The reversal of 12055145 is 54155021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 7778521 = 2068^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 12055145 - 2²² = 7860841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12055145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205510 + ... + 1205519.

It is an arithmetic number, because the mean of its divisors is an integer number (3616545).

Almost surely, 2^12055145 is an apocalyptic number.

It is an amenable number.

12055145 is a deficient number, since it is larger than the sum of its proper divisors (2411035).

12055145 is an equidigital number, since it uses as much as digits as its factorization.

12055145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411034.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 12055145 is about 3472.0519869380. The cubic root of 12055145 is about 229.2930086072.

The spelling of 12055145 in words is "twelve million, fifty-five thousand, one hundred forty-five".