5285775821 has 2 divisors, whose sum is σ = 5285775822. Its totient is φ = 5285775820.

The previous prime is 5285775809. The next prime is 5285775823. The reversal of 5285775821 is 1285775825.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4661475625 + 624300196 = 68275^2 + 24986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5285775821 is a prime.

Together with 5285775823, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5285775821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5285775823) 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, 2642887910 + 2642887911.

It is an arithmetic number, because the mean of its divisors is an integer number (2642887911).

Almost surely, 2^5285775821 is an apocalyptic number.

It is an amenable number.

5285775821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5285775821 is an equidigital number, since it uses as much as digits as its factorization.

5285775821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568000, while the sum is 50.

The square root of 5285775821 is about 72703.3411955737. The cubic root of 5285775821 is about 1741.9522524582.

The spelling of 5285775821 in words is "five billion, two hundred eighty-five million, seven hundred seventy-five thousand, eight hundred twenty-one".