13522209 has 8 divisors (see below), whose sum is σ = 18056352. Its totient is φ = 9001440.

The previous prime is 13522189. The next prime is 13522211. The reversal of 13522209 is 90222531.

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

It is not a de Polignac number, because 13522209 - 2⁵ = 13522177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13522219) by changing a digit.

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, 679 + ... + 5244.

It is an arithmetic number, because the mean of its divisors is an integer number (2257044).

Almost surely, 2^13522209 is an apocalyptic number.

It is an amenable number.

13522209 is a deficient number, since it is larger than the sum of its proper divisors (4534143).

13522209 is an equidigital number, since it uses as much as digits as its factorization.

13522209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13522209 is about 3677.2556343012. The cubic root of 13522209 is about 238.2406588139.

It can be divided in two parts, 13522 and 209, that added together give a palindrome (13731).

The spelling of 13522209 in words is "thirteen million, five hundred twenty-two thousand, two hundred nine".