8222551 has 4 divisors (see below), whose sum is σ = 8242504. Its totient is φ = 8202600.

The previous prime is 8222549. The next prime is 8222563. The reversal of 8222551 is 1552228.

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

It is a cyclic number.

It is not a de Polignac number, because 8222551 - 2¹ = 8222549 is a prime.

It is a super-2 number, since 2×8222551² = 135220689895202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8222351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9345 + ... + 10186.

It is an arithmetic number, because the mean of its divisors is an integer number (2060626).

Almost surely, 2^8222551 is an apocalyptic number.

8222551 is a deficient number, since it is larger than the sum of its proper divisors (19953).

8222551 is a wasteful number, since it uses less digits than its factorization.

8222551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19952.

The product of its digits is 1600, while the sum is 25.

The square root of 8222551 is about 2867.4990845683. The cubic root of 8222551 is about 201.8376550715.

Adding to 8222551 its reverse (1552228), we get a palindrome (9774779).

The spelling of 8222551 in words is "eight million, two hundred twenty-two thousand, five hundred fifty-one".