13185505 has 16 divisors (see below), whose sum is σ = 16372224. Its totient is φ = 10186560.

The previous prime is 13185493. The next prime is 13185539. The reversal of 13185505 is 50558131.

It is not a de Polignac number, because 13185505 - 2⁷ = 13185377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48520 + ... + 48790.

It is an arithmetic number, because the mean of its divisors is an integer number (1023264).

Almost surely, 2^13185505 is an apocalyptic number.

It is an amenable number.

13185505 is a deficient number, since it is larger than the sum of its proper divisors (3186719).

13185505 is a wasteful number, since it uses less digits than its factorization.

13185505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 13185505 is about 3631.1850682663. The cubic root of 13185505 is about 236.2466121217.

The spelling of 13185505 in words is "thirteen million, one hundred eighty-five thousand, five hundred five".