5224421 has 2 divisors, whose sum is σ = 5224422. Its totient is φ = 5224420.

The previous prime is 5224367. The next prime is 5224433. The reversal of 5224421 is 1244225.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4389025 + 835396 = 2095^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 5224421 - 2¹⁰ = 5223397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5224393 and 5224402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5224441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2612210 + 2612211.

It is an arithmetic number, because the mean of its divisors is an integer number (2612211).

Almost surely, 2^5224421 is an apocalyptic number.

It is an amenable number.

5224421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5224421 is an equidigital number, since it uses as much as digits as its factorization.

5224421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640, while the sum is 20.

The square root of 5224421 is about 2285.6992365576. The cubic root of 5224421 is about 173.5186081856.

Adding to 5224421 its reverse (1244225), we get a palindrome (6468646).

The spelling of 5224421 in words is "five million, two hundred twenty-four thousand, four hundred twenty-one".