445021224 has 16 divisors (see below), whose sum is σ = 1112553120. Its totient is φ = 148340400.

The previous prime is 445021219. The next prime is 445021229. The reversal of 445021224 is 422120544.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (445021219) and next prime (445021229).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 18542551 = 445021224 / (4 + 4 + 5 + 0 + 2 + 1 + 2 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 445021194 and 445021203.

It is not an unprimeable number, because it can be changed into a prime (445021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9271252 + ... + 9271299.

It is an arithmetic number, because the mean of its divisors is an integer number (69534570).

Almost surely, 2^445021224 is an apocalyptic number.

It is an amenable number.

445021224 is an abundant number, since it is smaller than the sum of its proper divisors (667531896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445021224 is a wasteful number, since it uses less digits than its factorization.

445021224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18542560 (or 18542556 counting only the distinct ones).

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

The square root of 445021224 is about 21095.5261607764. The cubic root of 445021224 is about 763.4728095513.

Adding to 445021224 its reverse (422120544), we get a palindrome (867141768).

The spelling of 445021224 in words is "four hundred forty-five million, twenty-one thousand, two hundred twenty-four".