13322561 has 12 divisors (see below), whose sum is σ = 15860592. Its totient is φ = 11152008.

The previous prime is 13322539. The next prime is 13322563. The reversal of 13322561 is 16522331.

13322561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13322561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13322563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (1321716).

Almost surely, 2^13322561 is an apocalyptic number.

It is an amenable number.

13322561 is a deficient number, since it is larger than the sum of its proper divisors (2538031).

13322561 is an equidigital number, since it uses as much as digits as its factorization.

13322561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380 (or 6373 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 13322561 is about 3650.0083561548. The cubic root of 13322561 is about 237.0623430264.

Adding to 13322561 its reverse (16522331), we get a palindrome (29844892).

The spelling of 13322561 in words is "thirteen million, three hundred twenty-two thousand, five hundred sixty-one".