9113561 has 2 divisors, whose sum is σ = 9113562. Its totient is φ = 9113560.

The previous prime is 9113557. The next prime is 9113591. The reversal of 9113561 is 1653119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7054336 + 2059225 = 2656^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 9113561 - 2² = 9113557 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9113561.

It is not a weakly prime, because it can be changed into another prime (9113501) 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, 4556780 + 4556781.

It is an arithmetic number, because the mean of its divisors is an integer number (4556781).

Almost surely, 2^9113561 is an apocalyptic number.

It is an amenable number.

9113561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9113561 is an equidigital number, since it uses as much as digits as its factorization.

9113561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 26.

The square root of 9113561 is about 3018.8675028891. The cubic root of 9113561 is about 208.8796037424.

The spelling of 9113561 in words is "nine million, one hundred thirteen thousand, five hundred sixty-one".