13155564 has 24 divisors (see below), whose sum is σ = 30804928. Its totient is φ = 4369680.

The previous prime is 13155559. The next prime is 13155587. The reversal of 13155564 is 46555131.

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 7 ways as a sum of consecutive naturals, for example, 1899 + ... + 5469.

Almost surely, 2^13155564 is an apocalyptic number.

It is an amenable number.

13155564 is an abundant number, since it is smaller than the sum of its proper divisors (17649364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13155564 is a wasteful number, since it uses less digits than its factorization.

13155564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3883 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 13155564 is about 3627.0599664191. The cubic root of 13155564 is about 236.0676575146.

The spelling of 13155564 in words is "thirteen million, one hundred fifty-five thousand, five hundred sixty-four".