11591147 has 2 divisors, whose sum is σ = 11591148. Its totient is φ = 11591146.

The previous prime is 11591143. The next prime is 11591183. The reversal of 11591147 is 74119511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11591147 - 2² = 11591143 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11591143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5795573 + 5795574.

It is an arithmetic number, because the mean of its divisors is an integer number (5795574).

Almost surely, 2^11591147 is an apocalyptic number.

11591147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11591147 is an equidigital number, since it uses as much as digits as its factorization.

11591147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 29.

The square root of 11591147 is about 3404.5773599670. The cubic root of 11591147 is about 226.3126367280.

The spelling of 11591147 in words is "eleven million, five hundred ninety-one thousand, one hundred forty-seven".