5220680809 has 4 divisors (see below), whose sum is σ = 5272370820. Its totient is φ = 5168990800.

The previous prime is 5220680779. The next prime is 5220680813. The reversal of 5220680809 is 9080860225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4874832400 + 345848409 = 69820^2 + 18597^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220680809 - 2⁷ = 5220680681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5220680819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25844854 + ... + 25845055.

It is an arithmetic number, because the mean of its divisors is an integer number (1318092705).

Almost surely, 2^5220680809 is an apocalyptic number.

It is an amenable number.

5220680809 is a deficient number, since it is larger than the sum of its proper divisors (51690011).

5220680809 is a wasteful number, since it uses less digits than its factorization.

5220680809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51690010.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 5220680809 is about 72254.2788283158. The cubic root of 5220680809 is about 1734.7719066641.

The spelling of 5220680809 in words is "five billion, two hundred twenty million, six hundred eighty thousand, eight hundred nine".