5271684809 has 4 divisors (see below), whose sum is σ = 5271944580. Its totient is φ = 5271425040.

The previous prime is 5271684739. The next prime is 5271684811. The reversal of 5271684809 is 9084861725.

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 1251744400 + 4019940409 = 35380^2 + 63403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5271684809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5271681809) 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 in 3 ways as a sum of consecutive naturals, for example, 96602 + ... + 140979.

It is an arithmetic number, because the mean of its divisors is an integer number (1317986145).

Almost surely, 2^5271684809 is an apocalyptic number.

It is an amenable number.

5271684809 is a deficient number, since it is larger than the sum of its proper divisors (259771).

5271684809 is a wasteful number, since it uses less digits than its factorization.

5271684809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259770.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 5271684809 is about 72606.3689286277. The cubic root of 5271684809 is about 1740.4029551843.

The spelling of 5271684809 in words is "five billion, two hundred seventy-one million, six hundred eighty-four thousand, eight hundred nine".