5172821888 has 64 divisors (see below), whose sum is σ = 11179440720. Its totient is φ = 2369925120.

The previous prime is 5172821881. The next prime is 5172821891. The reversal of 5172821888 is 8881282715.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5172821881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216623 + ... + 239313.

Almost surely, 2^5172821888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5172821888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5589720360).

5172821888 is an abundant number, since it is smaller than the sum of its proper divisors (6006618832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5172821888 is a wasteful number, since it uses less digits than its factorization.

5172821888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22855 (or 22843 counting only the distinct ones).

The product of its digits is 573440, while the sum is 50.

The square root of 5172821888 is about 71922.3323314810. The cubic root of 5172821888 is about 1729.4546364780.

The spelling of 5172821888 in words is "five billion, one hundred seventy-two million, eight hundred twenty-one thousand, eight hundred eighty-eight".