4421257 has 2 divisors, whose sum is σ = 4421258. Its totient is φ = 4421256.

The previous prime is 4421237. The next prime is 4421297. The reversal of 4421257 is 7521244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4414201 + 7056 = 2101^2 + 84^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421257 - 2¹⁹ = 3896969 is a prime.

It is not a weakly prime, because it can be changed into another prime (4421227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210628 + 2210629.

It is an arithmetic number, because the mean of its divisors is an integer number (2210629).

Almost surely, 2^4421257 is an apocalyptic number.

It is an amenable number.

4421257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421257 is an equidigital number, since it uses as much as digits as its factorization.

4421257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 25.

The square root of 4421257 is about 2102.6785298756. The cubic root of 4421257 is about 164.1277138235.

The spelling of 4421257 in words is "four million, four hundred twenty-one thousand, two hundred fifty-seven".