5172821824 has 14 divisors (see below), whose sum is σ = 10264818434. Its totient is φ = 2586410880.

The previous prime is 5172821821. The next prime is 5172821837. The reversal of 5172821824 is 4281282715.

It can be written as a sum of positive squares in only one way, i.e., 4678560000 + 494261824 = 68400^2 + 22232^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5172821821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40412607 + ... + 40412734.

Almost surely, 2^5172821824 is an apocalyptic number.

It is an amenable number.

5172821824 is a deficient number, since it is larger than the sum of its proper divisors (5091996610).

5172821824 is an equidigital number, since it uses as much as digits as its factorization.

5172821824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80825353 (or 80825343 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 5172821824 is about 71922.3318865566. The cubic root of 5172821824 is about 1729.4546293456.

The spelling of 5172821824 in words is "five billion, one hundred seventy-two million, eight hundred twenty-one thousand, eight hundred twenty-four".