5720621 has 2 divisors, whose sum is σ = 5720622. Its totient is φ = 5720620.

The previous prime is 5720597. The next prime is 5720657. The reversal of 5720621 is 1260275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5354596 + 366025 = 2314^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 5720621 - 2¹⁸ = 5458477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5720321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860310 + 2860311.

It is an arithmetic number, because the mean of its divisors is an integer number (2860311).

Almost surely, 2^5720621 is an apocalyptic number.

It is an amenable number.

5720621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5720621 is an equidigital number, since it uses as much as digits as its factorization.

5720621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 5720621 is about 2391.7819716688. The cubic root of 5720621 is about 178.8467525178.

Adding to 5720621 its reverse (1260275), we get a palindrome (6980896).

The spelling of 5720621 in words is "five million, seven hundred twenty thousand, six hundred twenty-one".