445205500 has 48 divisors (see below), whose sum is σ = 986102208. Its totient is φ = 175560000.

The previous prime is 445205483. The next prime is 445205533. The reversal of 445205500 is 5502544.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29230 + ... + 41770.

It is an arithmetic number, because the mean of its divisors is an integer number (20543796).

Almost surely, 2^445205500 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 445205500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493051104).

445205500 is an abundant number, since it is smaller than the sum of its proper divisors (540896708).

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

445205500 is a wasteful number, since it uses less digits than its factorization.

445205500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12631 (or 12619 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 445205500 is about 21099.8933646595. The cubic root of 445205500 is about 763.5781755377.

The spelling of 445205500 in words is "four hundred forty-five million, two hundred five thousand, five hundred".