445555500 has 192 divisors, whose sum is σ = 1420927872. Its totient is φ = 107827200.

The previous prime is 445555489. The next prime is 445555501. The reversal of 445555500 is 5555544.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (445555501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1423344 + ... + 1423656.

It is an arithmetic number, because the mean of its divisors is an integer number (7400666).

Almost surely, 2^445555500 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 445555500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710463936).

445555500 is an abundant number, since it is smaller than the sum of its proper divisors (975372372).

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

445555500 is a wasteful number, since it uses less digits than its factorization.

445555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 445555500 is about 21108.1856160116. The cubic root of 445555500 is about 763.7782197557.

The spelling of 445555500 in words is "four hundred forty-five million, five hundred fifty-five thousand, five hundred".