445581056 has 72 divisors (see below), whose sum is σ = 940403520. Its totient is φ = 210366464.

The previous prime is 445581053. The next prime is 445581061. The reversal of 445581056 is 650185544.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445581053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348290 + ... + 349566.

It is an arithmetic number, because the mean of its divisors is an integer number (13061160).

Almost surely, 2^445581056 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 445581056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470201760).

445581056 is an abundant number, since it is smaller than the sum of its proper divisors (494822464).

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

445581056 is a wasteful number, since it uses less digits than its factorization.

445581056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 445581056 is about 21108.7909649037. The cubic root of 445581056 is about 763.7928223084.

The spelling of 445581056 in words is "four hundred forty-five million, five hundred eighty-one thousand, fifty-six".