448590221 has 2 divisors, whose sum is σ = 448590222. Its totient is φ = 448590220.

The previous prime is 448590173. The next prime is 448590227. The reversal of 448590221 is 122095844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316662025 + 131928196 = 17795^2 + 11486^2 .

It is a cyclic number.

It is not a de Polignac number, because 448590221 - 2¹⁴ = 448573837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448590227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224295110 + 224295111.

It is an arithmetic number, because the mean of its divisors is an integer number (224295111).

Almost surely, 2^448590221 is an apocalyptic number.

It is an amenable number.

448590221 is a deficient number, since it is larger than the sum of its proper divisors (1).

448590221 is an equidigital number, since it uses as much as digits as its factorization.

448590221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 448590221 is about 21179.9485598998. The cubic root of 448590221 is about 765.5083530768.

The spelling of 448590221 in words is "four hundred forty-eight million, five hundred ninety thousand, two hundred twenty-one".