9113591 has 2 divisors, whose sum is σ = 9113592. Its totient is φ = 9113590.

The previous prime is 9113561. The next prime is 9113593. The reversal of 9113591 is 1953119.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9113591 is a prime.

Together with 9113593, 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 (9113593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4556795 + 4556796.

It is an arithmetic number, because the mean of its divisors is an integer number (4556796).

Almost surely, 2^9113591 is an apocalyptic number.

9113591 is a deficient number, since it is larger than the sum of its proper divisors (1).

9113591 is an equidigital number, since it uses as much as digits as its factorization.

9113591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215, while the sum is 29.

The square root of 9113591 is about 3018.8724716357. The cubic root of 9113591 is about 208.8798329386.

The spelling of 9113591 in words is "nine million, one hundred thirteen thousand, five hundred ninety-one".