71221089 has 8 divisors (see below), whose sum is σ = 95051520. Its totient is φ = 47435696.

The previous prime is 71221081. The next prime is 71221091. The reversal of 71221089 is 98012217.

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 71221089 - 2³ = 71221081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71221081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7377 + ... + 14030.

It is an arithmetic number, because the mean of its divisors is an integer number (11881440).

Almost surely, 2^71221089 is an apocalyptic number.

It is an amenable number.

71221089 is a deficient number, since it is larger than the sum of its proper divisors (23830431).

71221089 is a wasteful number, since it uses less digits than its factorization.

71221089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22519.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 71221089 is about 8439.2587944677. The cubic root of 71221089 is about 414.5111367449.

The spelling of 71221089 in words is "seventy-one million, two hundred twenty-one thousand, eighty-nine".