5228908781 has 2 divisors, whose sum is σ = 5228908782. Its totient is φ = 5228908780.

The previous prime is 5228908759. The next prime is 5228908847. The reversal of 5228908781 is 1878098225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4122282025 + 1106626756 = 64205^2 + 33266^2 .

It is a cyclic number.

It is not a de Polignac number, because 5228908781 - 2⁶ = 5228908717 is a prime.

It is a super-2 number, since 2×5228908781² = 54682974080037811922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5228908981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2614454390 + 2614454391.

It is an arithmetic number, because the mean of its divisors is an integer number (2614454391).

Almost surely, 2^5228908781 is an apocalyptic number.

It is an amenable number.

5228908781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5228908781 is an equidigital number, since it uses as much as digits as its factorization.

5228908781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 5228908781 is about 72311.1940227791. The cubic root of 5228908781 is about 1735.6827816480.

The spelling of 5228908781 in words is "five billion, two hundred twenty-eight million, nine hundred eight thousand, seven hundred eighty-one".