11565413 has 2 divisors, whose sum is σ = 11565414. Its totient is φ = 11565412.

The previous prime is 11565397. The next prime is 11565419. The reversal of 11565413 is 31456511.

11565413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 5098564 = 2543^2 + 2258^2 .

It is a cyclic number.

It is not a de Polignac number, because 11565413 - 2⁴ = 11565397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11565419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782706 + 5782707.

It is an arithmetic number, because the mean of its divisors is an integer number (5782707).

Almost surely, 2^11565413 is an apocalyptic number.

It is an amenable number.

11565413 is a deficient number, since it is larger than the sum of its proper divisors (1).

11565413 is an equidigital number, since it uses as much as digits as its factorization.

11565413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 11565413 is about 3400.7959362479. The cubic root of 11565413 is about 226.1450305166.

The spelling of 11565413 in words is "eleven million, five hundred sixty-five thousand, four hundred thirteen".