13321265 has 4 divisors (see below), whose sum is σ = 15985524. Its totient is φ = 10657008.

The previous prime is 13321229. The next prime is 13321279. The reversal of 13321265 is 56212331.

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 2972176 + 10349089 = 1724^2 + 3217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321265 is a prime.

It is a super-2 number, since 2×13321265² = 354912202400450, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13321265.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332122 + ... + 1332131.

It is an arithmetic number, because the mean of its divisors is an integer number (3996381).

Almost surely, 2^13321265 is an apocalyptic number.

It is an amenable number.

13321265 is a deficient number, since it is larger than the sum of its proper divisors (2664259).

13321265 is an equidigital number, since it uses as much as digits as its factorization.

13321265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664258.

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

The square root of 13321265 is about 3649.8308179969. The cubic root of 13321265 is about 237.0546557467.

Adding to 13321265 its reverse (56212331), we get a palindrome (69533596).

The spelling of 13321265 in words is "thirteen million, three hundred twenty-one thousand, two hundred sixty-five".