5724057721 has 2 divisors, whose sum is σ = 5724057722. Its totient is φ = 5724057720.

The previous prime is 5724057637. The next prime is 5724057727. The reversal of 5724057721 is 1277504275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5402250000 + 321807721 = 73500^2 + 17939^2 .

It is a cyclic number.

It is not a de Polignac number, because 5724057721 - 2²⁷ = 5589839993 is a prime.

It is not a weakly prime, because it can be changed into another prime (5724057727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2862028860 + 2862028861.

It is an arithmetic number, because the mean of its divisors is an integer number (2862028861).

Almost surely, 2^5724057721 is an apocalyptic number.

It is an amenable number.

5724057721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5724057721 is an equidigital number, since it uses as much as digits as its factorization.

5724057721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137200, while the sum is 40.

The square root of 5724057721 is about 75657.5027409708. The cubic root of 5724057721 is about 1788.8256001410.

The spelling of 5724057721 in words is "five billion, seven hundred twenty-four million, fifty-seven thousand, seven hundred twenty-one".