13565441 has 2 divisors, whose sum is σ = 13565442. Its totient is φ = 13565440.

The previous prime is 13565413. The next prime is 13565471. The reversal of 13565441 is 14456531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 461041 = 3620^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 13565441 - 2²² = 9371137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13565471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6782720 + 6782721.

It is an arithmetic number, because the mean of its divisors is an integer number (6782721).

Almost surely, 2^13565441 is an apocalyptic number.

It is an amenable number.

13565441 is a deficient number, since it is larger than the sum of its proper divisors (1).

13565441 is an equidigital number, since it uses as much as digits as its factorization.

13565441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 29.

The square root of 13565441 is about 3683.1292401978. The cubic root of 13565441 is about 238.4942826430.

The spelling of 13565441 in words is "thirteen million, five hundred sixty-five thousand, four hundred forty-one".