9561961 has 2 divisors, whose sum is σ = 9561962. Its totient is φ = 9561960.

The previous prime is 9561943. The next prime is 9561983. The reversal of 9561961 is 1691659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5736025 + 3825936 = 2395^2 + 1956^2 .

It is an emirp because it is prime and its reverse (1691659) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9561961 - 2⁷ = 9561833 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9561961.

It is not a weakly prime, because it can be changed into another prime (9561901) 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, 4780980 + 4780981.

It is an arithmetic number, because the mean of its divisors is an integer number (4780981).

Almost surely, 2^9561961 is an apocalyptic number.

It is an amenable number.

9561961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9561961 is an equidigital number, since it uses as much as digits as its factorization.

9561961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 37.

The square root of 9561961 is about 3092.2420668505. The cubic root of 9561961 is about 212.2506306623.

The spelling of 9561961 in words is "nine million, five hundred sixty-one thousand, nine hundred sixty-one".