5724221 has 2 divisors, whose sum is σ = 5724222. Its totient is φ = 5724220.

The previous prime is 5724211. The next prime is 5724247. The reversal of 5724221 is 1224275.

Added to its reverse (1224275) it gives a square (6948496 = 2636²).

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5707321 + 16900 = 2389^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 5724221 - 2⁶ = 5724157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5724211) 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, 2862110 + 2862111.

It is an arithmetic number, because the mean of its divisors is an integer number (2862111).

Almost surely, 2^5724221 is an apocalyptic number.

It is an amenable number.

5724221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5724221 is an equidigital number, since it uses as much as digits as its factorization.

5724221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 23.

The square root of 5724221 is about 2392.5344302643. The cubic root of 5724221 is about 178.8842608756.

Adding to 5724221 its reverse (1224275), we get a palindrome (6948496).

The spelling of 5724221 in words is "five million, seven hundred twenty-four thousand, two hundred twenty-one".