5721347520 has 672 divisors, whose sum is σ = 24390632448. Its totient is φ = 1248141312.

The previous prime is 5721347519. The next prime is 5721347521. The reversal of 5721347520 is 257431275.

5721347520 is a `hidden beast` number, since 572 + 1 + 34 + 7 + 52 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (5721347519) and next prime (5721347521).

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×5721347520² = 65467634889220300800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721347521) 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 95 ways as a sum of consecutive naturals, for example, 12519132 + ... + 12519588.

It is an arithmetic number, because the mean of its divisors is an integer number (36295584).

Almost surely, 2^5721347520 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 5721347520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12195316224).

5721347520 is an abundant number, since it is smaller than the sum of its proper divisors (18669284928).

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

5721347520 is a wasteful number, since it uses less digits than its factorization.

5721347520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 5721347520 is about 75639.5896340005. The cubic root of 5721347520 is about 1788.5432338828.

Adding to 5721347520 its reverse (257431275), we get a palindrome (5978778795).

The spelling of 5721347520 in words is "five billion, seven hundred twenty-one million, three hundred forty-seven thousand, five hundred twenty".