8222557 has 8 divisors (see below), whose sum is σ = 9516800. Its totient is φ = 6958224.

The previous prime is 8222549. The next prime is 8222563. The reversal of 8222557 is 7552228.

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

It is not a de Polignac number, because 8222557 - 2³ = 8222549 is a prime.

It is a super-2 number, since 2×8222557² = 135220887236498, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁴ + 2 + 2⁸ + 2²² + 5⁹ + 5⁹ + 7⁶ .

It is the 2868-th Hogben number.

It is a Duffinian number.

8222557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8222567) by changing a digit.

It is a nontrivial repunit in base 2867.

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 7 ways as a sum of consecutive naturals, for example, 6882 + ... + 7987.

It is an arithmetic number, because the mean of its divisors is an integer number (1189600).

Almost surely, 2^8222557 is an apocalyptic number.

It is an amenable number.

8222557 is a deficient number, since it is larger than the sum of its proper divisors (1294243).

8222557 is a wasteful number, since it uses less digits than its factorization.

8222557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14955.

The product of its digits is 11200, while the sum is 31.

The square root of 8222557 is about 2867.5001307759. The cubic root of 8222557 is about 201.8377041652.

The spelling of 8222557 in words is "eight million, two hundred twenty-two thousand, five hundred fifty-seven".