9841561 has 2 divisors, whose sum is σ = 9841562. Its totient is φ = 9841560.

The previous prime is 9841543. The next prime is 9841591. The reversal of 9841561 is 1651489.

9841561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5494336 + 4347225 = 2344^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 9841561 - 2¹⁷ = 9710489 is a prime.

It is equal to p₆₅₄₈₄₇ and since 9841561 and 654847 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (9841591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920780 + 4920781.

It is an arithmetic number, because the mean of its divisors is an integer number (4920781).

Almost surely, 2^9841561 is an apocalyptic number.

It is an amenable number.

9841561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9841561 is an equidigital number, since it uses as much as digits as its factorization.

9841561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 9841561 is about 3137.1262327168. The cubic root of 9841561 is about 214.2995847741.

The spelling of 9841561 in words is "nine million, eight hundred forty-one thousand, five hundred sixty-one".