11552591 has 2 divisors, whose sum is σ = 11552592. Its totient is φ = 11552590.

The previous prime is 11552581. The next prime is 11552617. The reversal of 11552591 is 19525511.

11552591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11552591 - 2¹⁰ = 11551567 is a prime.

It is a Sophie Germain 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 (11552501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776295 + 5776296.

It is an arithmetic number, because the mean of its divisors is an integer number (5776296).

Almost surely, 2^11552591 is an apocalyptic number.

11552591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11552591 is an equidigital number, since it uses as much as digits as its factorization.

11552591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 29.

The square root of 11552591 is about 3398.9102665413. The cubic root of 11552591 is about 226.0614276857.

The spelling of 11552591 in words is "eleven million, five hundred fifty-two thousand, five hundred ninety-one".