13255217 has 4 divisors (see below), whose sum is σ = 13952880. Its totient is φ = 12557556.

The previous prime is 13255201. The next prime is 13255243. The reversal of 13255217 is 71255231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71255231 = 2441 ⋅29191.

It is not a de Polignac number, because 13255217 - 2⁴ = 13255201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13225217) 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, 348803 + ... + 348840.

It is an arithmetic number, because the mean of its divisors is an integer number (3488220).

Almost surely, 2^13255217 is an apocalyptic number.

It is an amenable number.

13255217 is a deficient number, since it is larger than the sum of its proper divisors (697663).

13255217 is an equidigital number, since it uses as much as digits as its factorization.

13255217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697662.

The product of its digits is 2100, while the sum is 26.

The square root of 13255217 is about 3640.7714841775. The cubic root of 13255217 is about 236.6622272085.

The spelling of 13255217 in words is "thirteen million, two hundred fifty-five thousand, two hundred seventeen".