8522865 has 48 divisors (see below), whose sum is σ = 16864848. Its totient is φ = 3944448.

The previous prime is 8522863. The next prime is 8522909. The reversal of 8522865 is 5682258.

It can be written as a sum of positive squares in 8 ways, for example, as 159201 + 8363664 = 399^2 + 2892^2 .

It is not a de Polignac number, because 8522865 - 2¹ = 8522863 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8522863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9517 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (351351).

Almost surely, 2^8522865 is an apocalyptic number.

8522865 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8522865 is a deficient number, since it is larger than the sum of its proper divisors (8341983).

8522865 is a wasteful number, since it uses less digits than its factorization.

8522865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 895 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 8522865 is about 2919.3946290284. The cubic root of 8522865 is about 204.2655854596.

The spelling of 8522865 in words is "eight million, five hundred twenty-two thousand, eight hundred sixty-five".