43221552 has 80 divisors (see below), whose sum is σ = 123087360. Its totient is φ = 12960000.

The previous prime is 43221547. The next prime is 43221559. The reversal of 43221552 is 25512234.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (43221559) 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, 57177 + ... + 57927.

It is an arithmetic number, because the mean of its divisors is an integer number (1538592).

Almost surely, 2^43221552 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 43221552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61543680).

43221552 is an abundant number, since it is smaller than the sum of its proper divisors (79865808).

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

43221552 is a wasteful number, since it uses less digits than its factorization.

43221552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 876 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 43221552 is about 6574.3100018177. The cubic root of 43221552 is about 350.9404692832.

Adding to 43221552 its reverse (25512234), we get a palindrome (68733786).

The spelling of 43221552 in words is "forty-three million, two hundred twenty-one thousand, five hundred fifty-two".