5707721 has 2 divisors, whose sum is σ = 5707722. Its totient is φ = 5707720.

The previous prime is 5707711. The next prime is 5707747. The reversal of 5707721 is 1277075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5707321 + 400 = 2389^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 5707721 - 2¹⁸ = 5445577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5707711) 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 as a sum of consecutive naturals, namely, 2853860 + 2853861.

It is an arithmetic number, because the mean of its divisors is an integer number (2853861).

Almost surely, 2^5707721 is an apocalyptic number.

It is an amenable number.

5707721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5707721 is an equidigital number, since it uses as much as digits as its factorization.

5707721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 5707721 is about 2389.0837155696. The cubic root of 5707721 is about 178.7122182035.

The spelling of 5707721 in words is "five million, seven hundred seven thousand, seven hundred twenty-one".