8522257 has 4 divisors (see below), whose sum is σ = 8548336. Its totient is φ = 8496180.

The previous prime is 8522251. The next prime is 8522281. The reversal of 8522257 is 7522258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8522257 - 2²³ = 133649 is a prime.

It is a d-powerful number, because it can be written as 8³ + 5 + 2¹¹ + 2¹⁷ + 2²³ + 5 + 7 .

It is a pancake number, because a pancake can be divided into 8522257 parts by 4128 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8522251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12543 + ... + 13204.

It is an arithmetic number, because the mean of its divisors is an integer number (2137084).

Almost surely, 2^8522257 is an apocalyptic number.

It is an amenable number.

8522257 is a deficient number, since it is larger than the sum of its proper divisors (26079).

8522257 is a wasteful number, since it uses less digits than its factorization.

8522257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26078.

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

The square root of 8522257 is about 2919.2904959938. The cubic root of 8522257 is about 204.2607280777.

Subtracting from 8522257 its reverse (7522258), we obtain a palindrome (999999).

The spelling of 8522257 in words is "eight million, five hundred twenty-two thousand, two hundred fifty-seven".