5220135281 has 2 divisors, whose sum is σ = 5220135282. Its totient is φ = 5220135280.

The previous prime is 5220135257. The next prime is 5220135313. The reversal of 5220135281 is 1825310225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2881542400 + 2338592881 = 53680^2 + 48359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5220135281 is a prime.

It is a super-2 number, since 2×5220135281² = 54499624703881897922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5220135251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610067640 + 2610067641.

It is an arithmetic number, because the mean of its divisors is an integer number (2610067641).

Almost surely, 2^5220135281 is an apocalyptic number.

It is an amenable number.

5220135281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220135281 is an equidigital number, since it uses as much as digits as its factorization.

5220135281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5220135281 is about 72250.5036729849. The cubic root of 5220135281 is about 1734.7114803424.

The spelling of 5220135281 in words is "five billion, two hundred twenty million, one hundred thirty-five thousand, two hundred eighty-one".