9056561 has 4 divisors (see below), whose sum is σ = 9070692. Its totient is φ = 9042432.

The previous prime is 9056507. The next prime is 9056573. The reversal of 9056561 is 1656509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 2002225 = 2656^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 9056561 - 2¹⁴ = 9040177 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9056581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (2267673).

Almost surely, 2^9056561 is an apocalyptic number.

It is an amenable number.

9056561 is a deficient number, since it is larger than the sum of its proper divisors (14131).

9056561 is a wasteful number, since it uses less digits than its factorization.

9056561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14130.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 9056561 is about 3009.4120688267. The cubic root of 9056561 is about 208.4432193990.

The spelling of 9056561 in words is "nine million, fifty-six thousand, five hundred sixty-one".