43027221 has 16 divisors (see below), whose sum is σ = 60912000. Its totient is φ = 26923008.

The previous prime is 43027157. The next prime is 43027247. The reversal of 43027221 is 12272034.

It is not a de Polignac number, because 43027221 - 2⁶ = 43027157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43027291) 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, 21960 + ... + 23838.

It is an arithmetic number, because the mean of its divisors is an integer number (3807000).

Almost surely, 2^43027221 is an apocalyptic number.

It is an amenable number.

43027221 is a deficient number, since it is larger than the sum of its proper divisors (17884779).

43027221 is a wasteful number, since it uses less digits than its factorization.

43027221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 43027221 is about 6559.5137777125. The cubic root of 43027221 is about 350.4137175751.

Adding to 43027221 its reverse (12272034), we get a palindrome (55299255).

The spelling of 43027221 in words is "forty-three million, twenty-seven thousand, two hundred twenty-one".