11432591 has 2 divisors, whose sum is σ = 11432592. Its totient is φ = 11432590.

The previous prime is 11432581. The next prime is 11432639. The reversal of 11432591 is 19523411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11432591 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11432591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11432581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5716295 + 5716296.

It is an arithmetic number, because the mean of its divisors is an integer number (5716296).

Almost surely, 2^11432591 is an apocalyptic number.

11432591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11432591 is an equidigital number, since it uses as much as digits as its factorization.

11432591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 11432591 is about 3381.2114692814. The cubic root of 11432591 is about 225.2759806905.

The spelling of 11432591 in words is "eleven million, four hundred thirty-two thousand, five hundred ninety-one".