13255513 has 4 divisors (see below), whose sum is σ = 13305060. Its totient is φ = 13205968.

The previous prime is 13255511. The next prime is 13255519. The reversal of 13255513 is 31555231.

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 + 8450649 = 2192^2 + 2907^2 .

It is a cyclic number.

It is not a de Polignac number, because 13255513 - 2¹ = 13255511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13255511) 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, 24370 + ... + 24907.

It is an arithmetic number, because the mean of its divisors is an integer number (3326265).

Almost surely, 2^13255513 is an apocalyptic number.

It is an amenable number.

13255513 is a deficient number, since it is larger than the sum of its proper divisors (49547).

13255513 is an equidigital number, since it uses as much as digits as its factorization.

13255513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49546.

The product of its digits is 2250, while the sum is 25.

The square root of 13255513 is about 3640.8121346754. The cubic root of 13255513 is about 236.6639888167.

The spelling of 13255513 in words is "thirteen million, two hundred fifty-five thousand, five hundred thirteen".