11554591 has 2 divisors, whose sum is σ = 11554592. Its totient is φ = 11554590.

The previous prime is 11554567. The next prime is 11554601. The reversal of 11554591 is 19545511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11554591 - 2¹⁵ = 11521823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11554511) 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, 5777295 + 5777296.

It is an arithmetic number, because the mean of its divisors is an integer number (5777296).

Almost surely, 2^11554591 is an apocalyptic number.

11554591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554591 is an equidigital number, since it uses as much as digits as its factorization.

11554591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 31.

The square root of 11554591 is about 3399.2044657537. The cubic root of 11554591 is about 226.0744722852.

The spelling of 11554591 in words is "eleven million, five hundred fifty-four thousand, five hundred ninety-one".