9159561 has 10 divisors (see below), whose sum is σ = 13682922. Its totient is φ = 6106320.

The previous prime is 9159551. The next prime is 9159569. The reversal of 9159561 is 1659519.

9159561 is a `hidden beast` number, since 9 + 1 + 595 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8088336 + 1071225 = 2844^2 + 1035^2 .

It is not a de Polignac number, because 9159561 - 2⁷ = 9159433 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9159569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 56460 + ... + 56621.

Almost surely, 2^9159561 is an apocalyptic number.

It is an amenable number.

9159561 is a deficient number, since it is larger than the sum of its proper divisors (4523361).

9159561 is a wasteful number, since it uses less digits than its factorization.

9159561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113093 (or 113084 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 9159561 is about 3026.4766643739. The cubic root of 9159561 is about 209.2304487071.

The spelling of 9159561 in words is "nine million, one hundred fifty-nine thousand, five hundred sixty-one".