43855056 has 120 divisors (see below), whose sum is σ = 141727040. Its totient is φ = 12400128.

The previous prime is 43855037. The next prime is 43855057. The reversal of 43855056 is 65055834.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 43855056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43855057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139956 + ... + 140268.

Almost surely, 2^43855056 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 43855056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70863520).

43855056 is an abundant number, since it is smaller than the sum of its proper divisors (97871984).

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

43855056 is a wasteful number, since it uses less digits than its factorization.

43855056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 43855056 is about 6622.3150030786. The cubic root of 43855056 is about 352.6467534414.

The spelling of 43855056 in words is "forty-three million, eight hundred fifty-five thousand, fifty-six".