11547491 has 2 divisors, whose sum is σ = 11547492. Its totient is φ = 11547490.

The previous prime is 11547479. The next prime is 11547493. The reversal of 11547491 is 19474511.

It is a happy number.

11547491 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 a cyclic number.

It is not a de Polignac number, because 11547491 - 2¹⁰ = 11546467 is a prime.

It is a Sophie Germain prime.

Together with 11547493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11547493) 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, 5773745 + 5773746.

It is an arithmetic number, because the mean of its divisors is an integer number (5773746).

Almost surely, 2^11547491 is an apocalyptic number.

11547491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11547491 is an equidigital number, since it uses as much as digits as its factorization.

11547491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 11547491 is about 3398.1599432634. The cubic root of 11547491 is about 226.0281571413.

The spelling of 11547491 in words is "eleven million, five hundred forty-seven thousand, four hundred ninety-one".