82522217 has 8 divisors (see below), whose sum is σ = 87263232. Its totient is φ = 77911200.

The previous prime is 82522207. The next prime is 82522241. The reversal of 82522217 is 71222528.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82522217 is a prime.

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 82522217.

It is not an unprimeable number, because it can be changed into a prime (82522207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31193 + ... + 33734.

It is an arithmetic number, because the mean of its divisors is an integer number (10907904).

Almost surely, 2^82522217 is an apocalyptic number.

It is an amenable number.

82522217 is a deficient number, since it is larger than the sum of its proper divisors (4741015).

82522217 is a wasteful number, since it uses less digits than its factorization.

82522217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64999.

The product of its digits is 4480, while the sum is 29.

The square root of 82522217 is about 9084.1739855641. The cubic root of 82522217 is about 435.3684586794.

The spelling of 82522217 in words is "eighty-two million, five hundred twenty-two thousand, two hundred seventeen".