8229561 has 16 divisors (see below), whose sum is σ = 11733120. Its totient is φ = 5118080.

The previous prime is 8229553. The next prime is 8229569. The reversal of 8229561 is 1659228.

It is an interprime number because it is at equal distance from previous prime (8229553) and next prime (8229569).

It is a cyclic number.

It is not a de Polignac number, because 8229561 - 2³ = 8229553 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8229569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375 + ... + 4283.

It is an arithmetic number, because the mean of its divisors is an integer number (733320).

Almost surely, 2^8229561 is an apocalyptic number.

It is an amenable number.

8229561 is a deficient number, since it is larger than the sum of its proper divisors (3503559).

8229561 is a wasteful number, since it uses less digits than its factorization.

8229561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its digits is 8640, while the sum is 33.

The square root of 8229561 is about 2868.7211436457. The cubic root of 8229561 is about 201.8949965655.

The spelling of 8229561 in words is "eight million, two hundred twenty-nine thousand, five hundred sixty-one".