13222509 has 8 divisors (see below), whose sum is σ = 17653440. Its totient is φ = 8803296.

The previous prime is 13222507. The next prime is 13222511. The reversal of 13222509 is 90522231.

13222509 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13222507) and next prime (13222511).

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

It is not a de Polignac number, because 13222509 - 2¹ = 13222507 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (2206680).

Almost surely, 2^13222509 is an apocalyptic number.

It is an amenable number.

13222509 is a deficient number, since it is larger than the sum of its proper divisors (4430931).

13222509 is an equidigital number, since it uses as much as digits as its factorization.

13222509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859.

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

The square root of 13222509 is about 3636.2768046451. The cubic root of 13222509 is about 236.4674077201.

It can be divided in two parts, 13222 and 509, that added together give a palindrome (13731).

The spelling of 13222509 in words is "thirteen million, two hundred twenty-two thousand, five hundred nine".