11548391 has 2 divisors, whose sum is σ = 11548392. Its totient is φ = 11548390.

The previous prime is 11548379. The next prime is 11548393. The reversal of 11548391 is 19384511.

11548391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19384511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11548391 is a prime.

It is a Sophie Germain prime.

Together with 11548393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11548393) 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, 5774195 + 5774196.

It is an arithmetic number, because the mean of its divisors is an integer number (5774196).

Almost surely, 2^11548391 is an apocalyptic number.

11548391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11548391 is an equidigital number, since it uses as much as digits as its factorization.

11548391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 11548391 is about 3398.2923652917. The cubic root of 11548391 is about 226.0340291255.

The spelling of 11548391 in words is "eleven million, five hundred forty-eight thousand, three hundred ninety-one".