5723621 has 2 divisors, whose sum is σ = 5723622. Its totient is φ = 5723620.

The previous prime is 5723593. The next prime is 5723633. The reversal of 5723621 is 1263275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5692996 + 30625 = 2386^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 5723621 - 2¹⁴ = 5707237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5723681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2861810 + 2861811.

It is an arithmetic number, because the mean of its divisors is an integer number (2861811).

Almost surely, 2^5723621 is an apocalyptic number.

It is an amenable number.

5723621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5723621 is an equidigital number, since it uses as much as digits as its factorization.

5723621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 5723621 is about 2392.4090369333. The cubic root of 5723621 is about 178.8780105749.

Adding to 5723621 its reverse (1263275), we get a palindrome (6986896).

The spelling of 5723621 in words is "five million, seven hundred twenty-three thousand, six hundred twenty-one".