9397561 has 2 divisors, whose sum is σ = 9397562. Its totient is φ = 9397560.

The previous prime is 9397559. The next prime is 9397643. The reversal of 9397561 is 1657939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 1166400 = 2869^2 + 1080^2 .

It is an emirp because it is prime and its reverse (1657939) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9397561 - 2¹ = 9397559 is a prime.

Together with 9397559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9397541) 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, 4698780 + 4698781.

It is an arithmetic number, because the mean of its divisors is an integer number (4698781).

Almost surely, 2^9397561 is an apocalyptic number.

It is an amenable number.

9397561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9397561 is an equidigital number, since it uses as much as digits as its factorization.

9397561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 9397561 is about 3065.5441605040. The cubic root of 9397561 is about 211.0271746856.

The spelling of 9397561 in words is "nine million, three hundred ninety-seven thousand, five hundred sixty-one".