5720321 has 2 divisors, whose sum is σ = 5720322. Its totient is φ = 5720320.

The previous prime is 5720293. The next prime is 5720329. The reversal of 5720321 is 1230275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4145296 + 1575025 = 2036^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 5720321 - 2¹⁰ = 5719297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5720293 and 5720302.

It is not a weakly prime, because it can be changed into another prime (5720329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860160 + 2860161.

It is an arithmetic number, because the mean of its divisors is an integer number (2860161).

Almost surely, 2^5720321 is an apocalyptic number.

It is an amenable number.

5720321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5720321 is an equidigital number, since it uses as much as digits as its factorization.

5720321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 5720321 is about 2391.7192561001. The cubic root of 5720321 is about 178.8436261111.

Adding to 5720321 its reverse (1230275), we get a palindrome (6950596).

The spelling of 5720321 in words is "five million, seven hundred twenty thousand, three hundred twenty-one".