13564505 has 8 divisors (see below), whose sum is σ = 16427400. Its totient is φ = 10751616.

The previous prime is 13564483. The next prime is 13564517. The reversal of 13564505 is 50546531.

It can be written as a sum of positive squares in 4 ways, for example, as 51529 + 13512976 = 227^2 + 3676^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13564505 - 2²⁰ = 12515929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11900 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (2053425).

Almost surely, 2^13564505 is an apocalyptic number.

It is an amenable number.

13564505 is a deficient number, since it is larger than the sum of its proper divisors (2862895).

13564505 is a wasteful number, since it uses less digits than its factorization.

13564505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25003.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 13564505 is about 3683.0021721416. The cubic root of 13564505 is about 238.4887972388.

The spelling of 13564505 in words is "thirteen million, five hundred sixty-four thousand, five hundred five".