8522537281 has 2 divisors, whose sum is σ = 8522537282. Its totient is φ = 8522537280.

The previous prime is 8522537251. The next prime is 8522537299. The reversal of 8522537281 is 1827352258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8387629056 + 134908225 = 91584^2 + 11615^2 .

It is a cyclic number.

It is not a de Polignac number, because 8522537281 - 2⁵ = 8522537249 is a prime.

It is a super-2 number, since 2×8522537281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8522537251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261268640 + 4261268641.

It is an arithmetic number, because the mean of its divisors is an integer number (4261268641).

Almost surely, 2^8522537281 is an apocalyptic number.

It is an amenable number.

8522537281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8522537281 is an equidigital number, since it uses as much as digits as its factorization.

8522537281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 43.

The square root of 8522537281 is about 92317.5892287055. The cubic root of 8522537281 is about 2042.6296730354.

The spelling of 8522537281 in words is "eight billion, five hundred twenty-two million, five hundred thirty-seven thousand, two hundred eighty-one".