13255321 has 4 divisors (see below), whose sum is σ = 13682944. Its totient is φ = 12827700.

The previous prime is 13255303. The next prime is 13255351. The reversal of 13255321 is 12355231.

13255321 = 169² + 170² + ... + 354².

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: 12355231 = 7 ⋅1765033.

It is a cyclic number.

It is not a de Polignac number, because 13255321 - 2¹⁵ = 13222553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13255292 and 13255301.

It is not an unprimeable number, because it can be changed into a prime (13255351) 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, 213765 + ... + 213826.

It is an arithmetic number, because the mean of its divisors is an integer number (3420736).

Almost surely, 2^13255321 is an apocalyptic number.

It is an amenable number.

13255321 is a deficient number, since it is larger than the sum of its proper divisors (427623).

13255321 is an equidigital number, since it uses as much as digits as its factorization.

13255321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427622.

The product of its digits is 900, while the sum is 22.

The square root of 13255321 is about 3640.7857668366. The cubic root of 13255321 is about 236.6628461549.

The spelling of 13255321 in words is "thirteen million, two hundred fifty-five thousand, three hundred twenty-one".