13245281 has 4 divisors (see below), whose sum is σ = 15137472. Its totient is φ = 11353092.

The previous prime is 13245269. The next prime is 13245301. The reversal of 13245281 is 18254231.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13245281 is a prime.

It is a super-2 number, since 2×13245281² = 350874937537922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13245281.

It is not an unprimeable number, because it can be changed into a prime (13245251) 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, 946085 + ... + 946098.

It is an arithmetic number, because the mean of its divisors is an integer number (3784368).

Almost surely, 2^13245281 is an apocalyptic number.

It is an amenable number.

13245281 is a deficient number, since it is larger than the sum of its proper divisors (1892191).

13245281 is an equidigital number, since it uses as much as digits as its factorization.

13245281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892190.

The product of its digits is 1920, while the sum is 26.

The square root of 13245281 is about 3639.4066824140. The cubic root of 13245281 is about 236.6030790838.

The spelling of 13245281 in words is "thirteen million, two hundred forty-five thousand, two hundred eighty-one".