43221055 has 16 divisors (see below), whose sum is σ = 55085184. Its totient is φ = 32442880.

The previous prime is 43221047. The next prime is 43221083. The reversal of 43221055 is 55012234.

It is not a de Polignac number, because 43221055 - 2³ = 43221047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38634 + ... + 39736.

It is an arithmetic number, because the mean of its divisors is an integer number (3442824).

Almost surely, 2^43221055 is an apocalyptic number.

43221055 is a deficient number, since it is larger than the sum of its proper divisors (11864129).

43221055 is a wasteful number, since it uses less digits than its factorization.

43221055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 43221055 is about 6574.2722030655. The cubic root of 43221055 is about 350.9391241357.

Adding to 43221055 its reverse (55012234), we get a palindrome (98233289).

The spelling of 43221055 in words is "forty-three million, two hundred twenty-one thousand, fifty-five".