5225821 has 2 divisors, whose sum is σ = 5225822. Its totient is φ = 5225820.

The previous prime is 5225797. The next prime is 5225839. The reversal of 5225821 is 1285225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5225796 + 25 = 2286^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 5225821 - 2⁹ = 5225309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5225921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2612910 + 2612911.

It is an arithmetic number, because the mean of its divisors is an integer number (2612911).

Almost surely, 2^5225821 is an apocalyptic number.

It is an amenable number.

5225821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5225821 is an equidigital number, since it uses as much as digits as its factorization.

5225821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 25.

The square root of 5225821 is about 2286.0054680600. The cubic root of 5225821 is about 173.5341061936.

Subtracting from 5225821 its sum of digits (25), we obtain a square (5225796 = 2286²).

The spelling of 5225821 in words is "five million, two hundred twenty-five thousand, eight hundred twenty-one".