445234221 has 12 divisors (see below), whose sum is σ = 647377120. Its totient is φ = 294856200.

The previous prime is 445234219. The next prime is 445234241. The reversal of 445234221 is 122432544.

It is not a de Polignac number, because 445234221 - 2¹ = 445234219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445234241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162451 + ... + 165168.

Almost surely, 2^445234221 is an apocalyptic number.

It is an amenable number.

445234221 is a deficient number, since it is larger than the sum of its proper divisors (202142899).

445234221 is a wasteful number, since it uses less digits than its factorization.

445234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327776 (or 327773 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 445234221 is about 21100.5739495399. The cubic root of 445234221 is about 763.5945951142.

Adding to 445234221 its reverse (122432544), we get a palindrome (567666765).

The spelling of 445234221 in words is "four hundred forty-five million, two hundred thirty-four thousand, two hundred twenty-one".