13412521 has 2 divisors, whose sum is σ = 13412522. Its totient is φ = 13412520.

The previous prime is 13412513. The next prime is 13412543. The reversal of 13412521 is 12521431.

13412521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 1022121 = 3520^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 13412521 - 2³ = 13412513 is a prime.

It is not a weakly prime, because it can be changed into another prime (13412501) 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 as a sum of consecutive naturals, namely, 6706260 + 6706261.

It is an arithmetic number, because the mean of its divisors is an integer number (6706261).

Almost surely, 2^13412521 is an apocalyptic number.

It is an amenable number.

13412521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13412521 is an equidigital number, since it uses as much as digits as its factorization.

13412521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 13412521 is about 3662.3108824894. The cubic root of 13412521 is about 237.5947308157.

Adding to 13412521 its reverse (12521431), we get a palindrome (25933952).

The spelling of 13412521 in words is "thirteen million, four hundred twelve thousand, five hundred twenty-one".