8522000 has 40 divisors (see below), whose sum is σ = 20611032. Its totient is φ = 3408000.

The previous prime is 8521999. The next prime is 8522009. The reversal of 8522000 is 2258.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 8456464 = 256^2 + 2908^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 8522000.

It is not an unprimeable number, because it can be changed into a prime (8522009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 4130.

Almost surely, 2^8522000 is an apocalyptic number.

8522000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8522000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10305516).

8522000 is an abundant number, since it is smaller than the sum of its proper divisors (12089032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8522000 is a wasteful number, since it uses less digits than its factorization.

8522000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284 (or 4268 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 8522000 is about 2919.2464781173. The cubic root of 8522000 is about 204.2586748057.

Adding to 8522000 its reverse (2258), we get a palindrome (8524258).

The spelling of 8522000 in words is "eight million, five hundred twenty-two thousand".