4244521 has 2 divisors, whose sum is σ = 4244522. Its totient is φ = 4244520.

The previous prime is 4244507. The next prime is 4244533. The reversal of 4244521 is 1254424.

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., 4145296 + 99225 = 2036^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 4244521 - 2¹¹ = 4242473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4244492 and 4244501.

It is not a weakly prime, because it can be changed into another prime (4244021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122260 + 2122261.

It is an arithmetic number, because the mean of its divisors is an integer number (2122261).

Almost surely, 2^4244521 is an apocalyptic number.

It is an amenable number.

4244521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4244521 is an equidigital number, since it uses as much as digits as its factorization.

4244521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 22.

The square root of 4244521 is about 2060.2235315616. The cubic root of 4244521 is about 161.9109529420.

Adding to 4244521 its reverse (1254424), we get a palindrome (5498945).

The spelling of 4244521 in words is "four million, two hundred forty-four thousand, five hundred twenty-one".