13005545 has 8 divisors (see below), whose sum is σ = 17836224. Its totient is φ = 8918064.

The previous prime is 13005539. The next prime is 13005563. The reversal of 13005545 is 54550031.

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 13005545 - 2¹⁰ = 13004521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13005545.

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, 185759 + ... + 185828.

It is an arithmetic number, because the mean of its divisors is an integer number (2229528).

Almost surely, 2^13005545 is an apocalyptic number.

It is an amenable number.

13005545 is a deficient number, since it is larger than the sum of its proper divisors (4830679).

13005545 is an equidigital number, since it uses as much as digits as its factorization.

13005545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371599.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 13005545 is about 3606.3201466315. The cubic root of 13005545 is about 235.1668951760.

Adding to 13005545 its reverse (54550031), we get a palindrome (67555576).

The spelling of 13005545 in words is "thirteen million, five thousand, five hundred forty-five".