11365559 has 2 divisors, whose sum is σ = 11365560. Its totient is φ = 11365558.

The previous prime is 11365513. The next prime is 11365573. The reversal of 11365559 is 95556311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11365559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11365579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5682779 + 5682780.

It is an arithmetic number, because the mean of its divisors is an integer number (5682780).

Almost surely, 2^11365559 is an apocalyptic number.

11365559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11365559 is an equidigital number, since it uses as much as digits as its factorization.

11365559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 35.

The square root of 11365559 is about 3371.2844733128. The cubic root of 11365559 is about 224.8348351664.

The spelling of 11365559 in words is "eleven million, three hundred sixty-five thousand, five hundred fifty-nine".