9617561 has 2 divisors, whose sum is σ = 9617562. Its totient is φ = 9617560.

The previous prime is 9617527. The next prime is 9617579. The reversal of 9617561 is 1657169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 2088025 = 2744^2 + 1445^2 .

It is an emirp because it is prime and its reverse (1657169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9617561 - 2¹⁴ = 9601177 is a prime.

It is not a weakly prime, because it can be changed into another prime (9617581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4808780 + 4808781.

It is an arithmetic number, because the mean of its divisors is an integer number (4808781).

Almost surely, 2^9617561 is an apocalyptic number.

It is an amenable number.

9617561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9617561 is an equidigital number, since it uses as much as digits as its factorization.

9617561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 9617561 is about 3101.2192763492. The cubic root of 9617561 is about 212.6612275851.

The spelling of 9617561 in words is "nine million, six hundred seventeen thousand, five hundred sixty-one".