445856556 has 48 divisors (see below), whose sum is σ = 1079447040. Its totient is φ = 143062080.

The previous prime is 445856491. The next prime is 445856557. The reversal of 445856556 is 655658544.

It is a super-2 number, since 2×445856556² = 397576137056362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445856557) 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, 125971 + ... + 129461.

It is an arithmetic number, because the mean of its divisors is an integer number (22488480).

Almost surely, 2^445856556 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 445856556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539723520).

445856556 is an abundant number, since it is smaller than the sum of its proper divisors (633590484).

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

445856556 is a wasteful number, since it uses less digits than its factorization.

445856556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894 (or 3892 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 48.

The square root of 445856556 is about 21115.3156737000. The cubic root of 445856556 is about 763.9502059961.

The spelling of 445856556 in words is "four hundred forty-five million, eight hundred fifty-six thousand, five hundred fifty-six".