450244221 has 32 divisors (see below), whose sum is σ = 703718400. Its totient is φ = 250753536.

The previous prime is 450244219. The next prime is 450244241. The reversal of 450244221 is 122442054.

It is a happy number.

It is not a de Polignac number, because 450244221 - 2¹ = 450244219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 450244191 and 450244200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450244241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134830 + ... + 138128.

It is an arithmetic number, because the mean of its divisors is an integer number (21991200).

Almost surely, 2^450244221 is an apocalyptic number.

It is an amenable number.

450244221 is a deficient number, since it is larger than the sum of its proper divisors (253474179).

450244221 is a wasteful number, since it uses less digits than its factorization.

450244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 450244221 is about 21218.9589989707. The cubic root of 450244221 is about 766.4480361047.

Adding to 450244221 its reverse (122442054), we get a palindrome (572686275).

The spelling of 450244221 in words is "four hundred fifty million, two hundred forty-four thousand, two hundred twenty-one".