13513265 has 4 divisors (see below), whose sum is σ = 16215924. Its totient is φ = 10810608.

The previous prime is 13513243. The next prime is 13513267. The reversal of 13513265 is 56231531.

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 4804864 + 8708401 = 2192^2 + 2951^2 .

It is a cyclic number.

It is not a de Polignac number, because 13513265 - 2¹⁶ = 13447729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13513267) 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 3 ways as a sum of consecutive naturals, for example, 1351322 + ... + 1351331.

It is an arithmetic number, because the mean of its divisors is an integer number (4053981).

Almost surely, 2^13513265 is an apocalyptic number.

It is an amenable number.

13513265 is a deficient number, since it is larger than the sum of its proper divisors (2702659).

13513265 is an equidigital number, since it uses as much as digits as its factorization.

13513265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702658.

The product of its digits is 2700, while the sum is 26.

The square root of 13513265 is about 3676.0393088214. The cubic root of 13513265 is about 238.1881206913.

Adding to 13513265 its reverse (56231531), we get a palindrome (69744796).

The spelling of 13513265 in words is "thirteen million, five hundred thirteen thousand, two hundred sixty-five".