13244521 has 2 divisors, whose sum is σ = 13244522. Its totient is φ = 13244520.

The previous prime is 13244467. The next prime is 13244549. The reversal of 13244521 is 12544231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13220496 + 24025 = 3636^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 13244521 - 2⁹ = 13244009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13244492 and 13244501.

It is not a weakly prime, because it can be changed into another prime (13244551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622260 + 6622261.

It is an arithmetic number, because the mean of its divisors is an integer number (6622261).

Almost surely, 2^13244521 is an apocalyptic number.

It is an amenable number.

13244521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244521 is an equidigital number, since it uses as much as digits as its factorization.

13244521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 13244521 is about 3639.3022682926. The cubic root of 13244521 is about 236.5985536537.

Adding to 13244521 its reverse (12544231), we get a palindrome (25788752).

The spelling of 13244521 in words is "thirteen million, two hundred forty-four thousand, five hundred twenty-one".