445222544 has 40 divisors (see below), whose sum is σ = 938215992. Its totient is φ = 203443200.

The previous prime is 445222507. The next prime is 445222577.

445222544 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 15904144 + 429318400 = 3988^2 + 20720^2 .

It is a super-2 number, since 2×445222544² = 396446227371663872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445222544.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10412 + ... + 31604.

Almost surely, 2^445222544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445222544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469107996).

445222544 is an abundant number, since it is smaller than the sum of its proper divisors (492993448).

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

445222544 is a wasteful number, since it uses less digits than its factorization.

445222544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21315 (or 21309 counting only the distinct ones).

The product of its digits is 51200, while the sum is 32.

The square root of 445222544 is about 21100.2972490911. The cubic root of 445222544 is about 763.5879195476.

The spelling of 445222544 in words is "four hundred forty-five million, two hundred twenty-two thousand, five hundred forty-four".