13005505 has 8 divisors (see below), whose sum is σ = 15862824. Its totient is φ = 10233600.

The previous prime is 13005491. The next prime is 13005521. The reversal of 13005505 is 50550031.

13005505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 110224 + 12895281 = 332^2 + 3591^2 .

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

It is not a de Polignac number, because 13005505 - 2⁹ = 13004993 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 7 ways as a sum of consecutive naturals, for example, 21016 + ... + 21625.

It is an arithmetic number, because the mean of its divisors is an integer number (1982853).

Almost surely, 2^13005505 is an apocalyptic number.

It is an amenable number.

13005505 is a deficient number, since it is larger than the sum of its proper divisors (2857319).

13005505 is an equidigital number, since it uses as much as digits as its factorization.

13005505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42707.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 13005505 is about 3606.3146008079. The cubic root of 13005505 is about 235.1666540818.

Adding to 13005505 its reverse (50550031), we get a palindrome (63555536).

The spelling of 13005505 in words is "thirteen million, five thousand, five hundred five".