445051221 has 16 divisors (see below), whose sum is σ = 615137280. Its totient is φ = 285914160.

The previous prime is 445051183. The next prime is 445051237. The reversal of 445051221 is 122150544.

It is not a de Polignac number, because 445051221 - 2⁷ = 445051093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445051191 and 445051200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445051261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12216 + ... + 32238.

It is an arithmetic number, because the mean of its divisors is an integer number (38446080).

Almost surely, 2^445051221 is an apocalyptic number.

It is an amenable number.

445051221 is a deficient number, since it is larger than the sum of its proper divisors (170086059).

445051221 is a wasteful number, since it uses less digits than its factorization.

445051221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20296.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 445051221 is about 21096.2371289289. The cubic root of 445051221 is about 763.4899633244.

The spelling of 445051221 in words is "four hundred forty-five million, fifty-one thousand, two hundred twenty-one".