450221285 has 8 divisors (see below), whose sum is σ = 572045976. Its totient is φ = 338990080.

The previous prime is 450221249. The next prime is 450221293. The reversal of 450221285 is 582122054.

It can be written as a sum of positive squares in 4 ways, for example, as 153313924 + 296907361 = 12382^2 + 17231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 450221285 - 2⁶ = 450221221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2648276 + ... + 2648445.

It is an arithmetic number, because the mean of its divisors is an integer number (71505747).

Almost surely, 2^450221285 is an apocalyptic number.

It is an amenable number.

450221285 is a deficient number, since it is larger than the sum of its proper divisors (121824691).

450221285 is a wasteful number, since it uses less digits than its factorization.

450221285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296743.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 450221285 is about 21218.4185320207. The cubic root of 450221285 is about 766.4350212786.

The spelling of 450221285 in words is "four hundred fifty million, two hundred twenty-one thousand, two hundred eighty-five".