9445561 has 4 divisors (see below), whose sum is σ = 9771300. Its totient is φ = 9119824.

The previous prime is 9445547. The next prime is 9445573. The reversal of 9445561 is 1655449.

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 1577536 + 7868025 = 1256^2 + 2805^2 .

It is a cyclic number.

It is not a de Polignac number, because 9445561 - 2⁵ = 9445529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9445511) 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, 162826 + ... + 162883.

It is an arithmetic number, because the mean of its divisors is an integer number (2442825).

Almost surely, 2^9445561 is an apocalyptic number.

It is an amenable number.

9445561 is a deficient number, since it is larger than the sum of its proper divisors (325739).

9445561 is a wasteful number, since it uses less digits than its factorization.

9445561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325738.

The product of its digits is 21600, while the sum is 34.

The square root of 9445561 is about 3073.3631415763. The cubic root of 9445561 is about 211.3858531169.

The spelling of 9445561 in words is "nine million, four hundred forty-five thousand, five hundred sixty-one".