445565544 has 64 divisors (see below), whose sum is σ = 1161249600. Its totient is φ = 142331904.

The previous prime is 445565543. The next prime is 445565567.

445565544 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 445565496 and 445565505.

It is not an unprimeable number, because it can be changed into a prime (445565543) 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, 55752 + ... + 63240.

It is an arithmetic number, because the mean of its divisors is an integer number (18144525).

Almost surely, 2^445565544 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 445565544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580624800).

445565544 is an abundant number, since it is smaller than the sum of its proper divisors (715684056).

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

445565544 is a wasteful number, since it uses less digits than its factorization.

445565544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602 (or 7598 counting only the distinct ones).

The product of its digits is 960000, while the sum is 42.

The square root of 445565544 is about 21108.4235318510. The cubic root of 445565544 is about 763.7839589066.

The spelling of 445565544 in words is "four hundred forty-five million, five hundred sixty-five thousand, five hundred forty-four".