1244521 has 2 divisors, whose sum is σ = 1244522. Its totient is φ = 1244520.

The previous prime is 1244501. The next prime is 1244531. The reversal of 1244521 is 1254421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 1296 = 1115^2 + 36^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244521 - 2⁷ = 1244393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622260 + 622261.

It is an arithmetic number, because the mean of its divisors is an integer number (622261).

2^1244521 is an apocalyptic number.

It is an amenable number.

1244521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244521 is an equidigital number, since it uses as much as digits as its factorization.

1244521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 19.

The square root of 1244521 is about 1115.5810145391. The cubic root of 1244521 is about 107.5641153491.

Adding to 1244521 its reverse (1254421), we get a palindrome (2498942).

The spelling of 1244521 in words is "one million, two hundred forty-four thousand, five hundred twenty-one".