8522281 has 2 divisors, whose sum is σ = 8522282. Its totient is φ = 8522280.

The previous prime is 8522251. The next prime is 8522291. The reversal of 8522281 is 1822258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7728400 + 793881 = 2780^2 + 891^2 .

It is a cyclic number.

It is not a de Polignac number, because 8522281 - 2¹⁵ = 8489513 is a prime.

It is a super-2 number, since 2×8522281² = 145258546885922, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8522221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261140 + 4261141.

It is an arithmetic number, because the mean of its divisors is an integer number (4261141).

Almost surely, 2^8522281 is an apocalyptic number.

It is an amenable number.

8522281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8522281 is an equidigital number, since it uses as much as digits as its factorization.

8522281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 28.

The square root of 8522281 is about 2919.2946065788. The cubic root of 8522281 is about 204.2609198209.

It can be divided in two parts, 85 and 22281, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 8522281 in words is "eight million, five hundred twenty-two thousand, two hundred eighty-one".