5722721 has 4 divisors (see below), whose sum is σ = 5729712. Its totient is φ = 5715732.

The previous prime is 5722697. The next prime is 5722729. The reversal of 5722721 is 1272275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5722721 - 2¹⁰ = 5721697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5722729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 3968.

It is an arithmetic number, because the mean of its divisors is an integer number (1432428).

Almost surely, 2^5722721 is an apocalyptic number.

It is an amenable number.

5722721 is a deficient number, since it is larger than the sum of its proper divisors (6991).

5722721 is an equidigital number, since it uses as much as digits as its factorization.

5722721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its digits is 1960, while the sum is 26.

The square root of 5722721 is about 2392.2209346129. The cubic root of 5722721 is about 178.8686343049.

Adding to 5722721 its reverse (1272275), we get a palindrome (6994996).

The spelling of 5722721 in words is "five million, seven hundred twenty-two thousand, seven hundred twenty-one".