71082091 has 2 divisors, whose sum is σ = 71082092. Its totient is φ = 71082090.

The previous prime is 71082031. The next prime is 71082107. The reversal of 71082091 is 19028017.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71082091 - 2⁷ = 71081963 is a prime.

It is not a weakly prime, because it can be changed into another prime (71082031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35541045 + 35541046.

It is an arithmetic number, because the mean of its divisors is an integer number (35541046).

Almost surely, 2^71082091 is an apocalyptic number.

71082091 is a deficient number, since it is larger than the sum of its proper divisors (1).

71082091 is an equidigital number, since it uses as much as digits as its factorization.

71082091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 71082091 is about 8431.0195706095. The cubic root of 71082091 is about 414.2413021470.

The spelling of 71082091 in words is "seventy-one million, eighty-two thousand, ninety-one".