5220999281 has 2 divisors, whose sum is σ = 5220999282.
Its totient is φ = 5220999280.
The previous prime is 5220999247. The next prime is 5220999307. The reversal of 5220999281 is 1829990225.
5220999281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 4911767056 + 309232225 = 70084^2 + 17585^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-5220999281 is a prime.
It is a super-2 number, since 2×52209992812 = 54517666984405033922, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (5220999221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610499640 + 2610499641.
It is an arithmetic number, because the mean of its divisors is an integer number (2610499641).
Almost surely, 25220999281 is an apocalyptic number.
It is an amenable number.
5220999281 is a deficient number, since it is larger than the sum of its proper divisors (1).
5220999281 is an equidigital number, since it uses as much as digits as its factorization.
5220999281 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 233280, while the sum is 47.
The square root of 5220999281 is about 72256.4826226685.
The cubic root of 5220999281 is about 1734.8071808020.
The spelling of 5220999281 in words is "five billion, two hundred twenty million, nine hundred ninety-nine thousand, two hundred eighty-one".