8222561 has 8 divisors (see below), whose sum is σ = 8387904. Its totient is φ = 8058960.

The previous prime is 8222549. The next prime is 8222563. The reversal of 8222561 is 1652228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8222561 - 2¹⁰ = 8221537 is a prime.

It is a super-2 number, since 2×8222561² = 135221018797442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8222561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8222563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12716 + ... + 13346.

It is an arithmetic number, because the mean of its divisors is an integer number (1048488).

Almost surely, 2^8222561 is an apocalyptic number.

It is an amenable number.

8222561 is a deficient number, since it is larger than the sum of its proper divisors (165343).

8222561 is a wasteful number, since it uses less digits than its factorization.

8222561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 1920, while the sum is 26.

The square root of 8222561 is about 2867.5008282475. The cubic root of 8222561 is about 201.8377368943.

Adding to 8222561 its reverse (1652228), we get a palindrome (9874789).

The spelling of 8222561 in words is "eight million, two hundred twenty-two thousand, five hundred sixty-one".