8810561 has 4 divisors (see below), whose sum is σ = 8976852. Its totient is φ = 8644272.

The previous prime is 8810491. The next prime is 8810563. The reversal of 8810561 is 1650188.

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 2660161 + 6150400 = 1631^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 8810561 - 2²² = 4616257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8810563) 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, 83066 + ... + 83171.

It is an arithmetic number, because the mean of its divisors is an integer number (2244213).

Almost surely, 2^8810561 is an apocalyptic number.

It is an amenable number.

8810561 is a deficient number, since it is larger than the sum of its proper divisors (166291).

8810561 is a wasteful number, since it uses less digits than its factorization.

8810561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166290.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 8810561 is about 2968.2589172779. The cubic root of 8810561 is about 206.5385803036.

The spelling of 8810561 in words is "eight million, eight hundred ten thousand, five hundred sixty-one".