9982521517 has 2 divisors, whose sum is σ = 9982521518. Its totient is φ = 9982521516.

The previous prime is 9982521503. The next prime is 9982521541. The reversal of 9982521517 is 7151252899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5863577476 + 4118944041 = 76574^2 + 64179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9982521517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9982521217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991260758 + 4991260759.

It is an arithmetic number, because the mean of its divisors is an integer number (4991260759).

Almost surely, 2^9982521517 is an apocalyptic number.

It is an amenable number.

9982521517 is a deficient number, since it is larger than the sum of its proper divisors (1).

9982521517 is an equidigital number, since it uses as much as digits as its factorization.

9982521517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 49.

The square root of 9982521517 is about 99912.5693644198. The cubic root of 9982521517 is about 2153.1787496795.

The spelling of 9982521517 in words is "nine billion, nine hundred eighty-two million, five hundred twenty-one thousand, five hundred seventeen".