13309265 has 4 divisors (see below), whose sum is σ = 15971124. Its totient is φ = 10647408.

The previous prime is 13309243. The next prime is 13309271. The reversal of 13309265 is 56290331.

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 6507601 + 6801664 = 2551^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 13309265 - 2¹⁰ = 13308241 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 3 ways as a sum of consecutive naturals, for example, 1330922 + ... + 1330931.

It is an arithmetic number, because the mean of its divisors is an integer number (3992781).

Almost surely, 2^13309265 is an apocalyptic number.

It is an amenable number.

13309265 is a deficient number, since it is larger than the sum of its proper divisors (2661859).

13309265 is an equidigital number, since it uses as much as digits as its factorization.

13309265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661858.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 13309265 is about 3648.1865358010. The cubic root of 13309265 is about 236.9834535381.

Adding to 13309265 its reverse (56290331), we get a palindrome (69599596).

The spelling of 13309265 in words is "thirteen million, three hundred nine thousand, two hundred sixty-five".