11547791 has 2 divisors, whose sum is σ = 11547792. Its totient is φ = 11547790.

The previous prime is 11547721. The next prime is 11547857. The reversal of 11547791 is 19774511.

It is a strong prime.

It is an emirp because it is prime and its reverse (19774511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11547791 - 2¹⁴ = 11531407 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 (11547721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5773895 + 5773896.

It is an arithmetic number, because the mean of its divisors is an integer number (5773896).

Almost surely, 2^11547791 is an apocalyptic number.

11547791 is a deficient number, since it is larger than the sum of its proper divisors (1).

11547791 is an equidigital number, since it uses as much as digits as its factorization.

11547791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 35.

The square root of 11547791 is about 3398.2040845129. The cubic root of 11547791 is about 226.0301145033.

The spelling of 11547791 in words is "eleven million, five hundred forty-seven thousand, seven hundred ninety-one".