71443091 has 2 divisors, whose sum is σ = 71443092. Its totient is φ = 71443090.

The previous prime is 71443079. The next prime is 71443093. The reversal of 71443091 is 19034417.

It is a strong prime.

It is an emirp because it is prime and its reverse (19034417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71443091 - 2¹⁰ = 71442067 is a prime.

Together with 71443093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71443093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721545 + 35721546.

It is an arithmetic number, because the mean of its divisors is an integer number (35721546).

Almost surely, 2^71443091 is an apocalyptic number.

71443091 is a deficient number, since it is larger than the sum of its proper divisors (1).

71443091 is an equidigital number, since it uses as much as digits as its factorization.

71443091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 71443091 is about 8452.4014930669. The cubic root of 71443091 is about 414.9413784715.

The spelling of 71443091 in words is "seventy-one million, four hundred forty-three thousand, ninety-one".