5221720 has 64 divisors (see below), whose sum is σ = 14230080. Its totient is φ = 1683456.

The previous prime is 5221717. The next prime is 5221721. The reversal of 5221720 is 271225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4212 + ... + 5308.

It is an arithmetic number, because the mean of its divisors is an integer number (222345).

Almost surely, 2^5221720 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 5221720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7115040).

5221720 is an abundant number, since it is smaller than the sum of its proper divisors (9008360).

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

5221720 is a wasteful number, since it uses less digits than its factorization.

5221720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 5221720 is about 2285.1083125314. The cubic root of 5221720 is about 173.4887002748.

Adding to 5221720 its reverse (271225), we get a palindrome (5492945).

The spelling of 5221720 in words is "five million, two hundred twenty-one thousand, seven hundred twenty".