5721757820 has 24 divisors (see below), whose sum is σ = 12024500544. Its totient is φ = 2287025216.

The previous prime is 5721757781. The next prime is 5721757859. The reversal of 5721757820 is 287571275.

It is an interprime number because it is at equal distance from previous prime (5721757781) and next prime (5721757859).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76724 + ... + 131643.

It is an arithmetic number, because the mean of its divisors is an integer number (501020856).

Almost surely, 2^5721757820 is an apocalyptic number.

It is an amenable number.

5721757820 is an abundant number, since it is smaller than the sum of its proper divisors (6302742724).

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

5721757820 is a wasteful number, since it uses less digits than its factorization.

5721757820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209749 (or 209747 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 44.

The square root of 5721757820 is about 75642.3017894088. The cubic root of 5721757820 is about 1788.5859873161.

The spelling of 5721757820 in words is "five billion, seven hundred twenty-one million, seven hundred fifty-seven thousand, eight hundred twenty".