71044221 has 8 divisors (see below), whose sum is σ = 96513120. Its totient is φ = 46469072.

The previous prime is 71044177. The next prime is 71044231. The reversal of 71044221 is 12244017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71044221 - 2⁷ = 71044093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71044231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223251 + ... + 223568.

It is an arithmetic number, because the mean of its divisors is an integer number (12064140).

Almost surely, 2^71044221 is an apocalyptic number.

It is an amenable number.

71044221 is a deficient number, since it is larger than the sum of its proper divisors (25468899).

71044221 is a wasteful number, since it uses less digits than its factorization.

71044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446875.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 71044221 is about 8428.7733983065. The cubic root of 71044221 is about 414.1677247541.

Adding to 71044221 its reverse (12244017), we get a palindrome (83288238).

It can be divided in two parts, 7104 and 4221, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 71044221 in words is "seventy-one million, forty-four thousand, two hundred twenty-one".