13222529 has 4 divisors (see below), whose sum is σ = 13238484. Its totient is φ = 13206576.

The previous prime is 13222511. The next prime is 13222553. The reversal of 13222529 is 92522231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5071504 + 8151025 = 2252^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222529 - 2⁸ = 13222273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13222498 and 13222507.

It is not an unprimeable number, because it can be changed into a prime (13222589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6662 + ... + 8415.

It is an arithmetic number, because the mean of its divisors is an integer number (3309621).

Almost surely, 2^13222529 is an apocalyptic number.

It is an amenable number.

13222529 is a deficient number, since it is larger than the sum of its proper divisors (15955).

13222529 is an equidigital number, since it uses as much as digits as its factorization.

13222529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15954.

The product of its digits is 2160, while the sum is 26.

The square root of 13222529 is about 3636.2795547097. The cubic root of 13222529 is about 236.4675269448.

The spelling of 13222529 in words is "thirteen million, two hundred twenty-two thousand, five hundred twenty-nine".