5286116821 has 2 divisors, whose sum is σ = 5286116822. Its totient is φ = 5286116820.

The previous prime is 5286116813. The next prime is 5286116831. The reversal of 5286116821 is 1286116825.

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., 4912467921 + 373648900 = 70089^2 + 19330^2 .

It is a cyclic number.

It is not a de Polignac number, because 5286116821 - 2³ = 5286116813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5286116831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2643058410 + 2643058411.

It is an arithmetic number, because the mean of its divisors is an integer number (2643058411).

Almost surely, 2^5286116821 is an apocalyptic number.

It is an amenable number.

5286116821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5286116821 is an equidigital number, since it uses as much as digits as its factorization.

5286116821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 5286116821 is about 72705.6863044425. The cubic root of 5286116821 is about 1741.9897110367.

The spelling of 5286116821 in words is "five billion, two hundred eighty-six million, one hundred sixteen thousand, eight hundred twenty-one".