13224245 has 4 divisors (see below), whose sum is σ = 15869100. Its totient is φ = 10579392.

The previous prime is 13224227. The next prime is 13224269. The reversal of 13224245 is 54242231.

It is a happy number.

13224245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54242231 = 1103 ⋅49177.

It can be written as a sum of positive squares in 2 ways, for example, as 9591409 + 3632836 = 3097^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224245 - 2¹⁶ = 13158709 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13224245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322420 + ... + 1322429.

It is an arithmetic number, because the mean of its divisors is an integer number (3967275).

Almost surely, 2^13224245 is an apocalyptic number.

It is an amenable number.

13224245 is a deficient number, since it is larger than the sum of its proper divisors (2644855).

13224245 is an equidigital number, since it uses as much as digits as its factorization.

13224245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644854.

The product of its digits is 1920, while the sum is 23.

The square root of 13224245 is about 3636.5155025106. The cubic root of 13224245 is about 236.4777559694.

Adding to 13224245 its reverse (54242231), we get a palindrome (67466476).

The spelling of 13224245 in words is "thirteen million, two hundred twenty-four thousand, two hundred forty-five".