5115321020 has 48 divisors (see below), whose sum is σ = 11130739200. Its totient is φ = 1972346880.

The previous prime is 5115320989. The next prime is 5115321031. The reversal of 5115321020 is 201235115.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 5115320983 and 5115321001.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 364901 + ... + 378659.

It is an arithmetic number, because the mean of its divisors is an integer number (231890400).

Almost surely, 2^5115321020 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 5115321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5565369600).

5115321020 is an abundant number, since it is smaller than the sum of its proper divisors (6015418180).

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

5115321020 is a wasteful number, since it uses less digits than its factorization.

5115321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14438 (or 14436 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5115321020 is about 71521.4724401001. The cubic root of 5115321020 is about 1723.0225630080.

Adding to 5115321020 its reverse (201235115), we get a palindrome (5316556135).

The spelling of 5115321020 in words is "five billion, one hundred fifteen million, three hundred twenty-one thousand, twenty".