445544 has 32 divisors (see below), whose sum is σ = 937440. Its totient is φ = 196800.

The previous prime is 445541. The next prime is 445567.

445544 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2⁴⁴⁵⁵⁴⁴ is an apocalyptic number.

445544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468720).

445544 is an abundant number, since it is smaller than the sum of its proper divisors (491896).

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

445544 is a wasteful number, since it uses less digits than its factorization.

445544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 157 counting only the distinct ones).

The product of its digits is 6400, while the sum is 26.

The square root of 445544 is about 667.4908239070. The cubic root of 445544 is about 76.3771648539.

It can be divided in two parts, 445 and 544, that added together give a palindrome (989).

The spelling of 445544 in words is "four hundred forty-five thousand, five hundred forty-four".