445426221 has 16 divisors (see below), whose sum is σ = 603348480. Its totient is φ = 292258560.

The previous prime is 445426213. The next prime is 445426243. The reversal of 445426221 is 122624544.

It is not a de Polignac number, because 445426221 - 2³ = 445426213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445426021) 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, 55801 + ... + 63281.

It is an arithmetic number, because the mean of its divisors is an integer number (37709280).

Almost surely, 2^445426221 is an apocalyptic number.

It is an amenable number.

445426221 is a deficient number, since it is larger than the sum of its proper divisors (157922259).

445426221 is a wasteful number, since it uses less digits than its factorization.

445426221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796.

The product of its digits is 15360, while the sum is 30.

The square root of 445426221 is about 21105.1230984328. The cubic root of 445426221 is about 763.7043419141.

The spelling of 445426221 in words is "four hundred forty-five million, four hundred twenty-six thousand, two hundred twenty-one".