71051671 has 2 divisors, whose sum is σ = 71051672. Its totient is φ = 71051670.

The previous prime is 71051663. The next prime is 71051677. The reversal of 71051671 is 17615017.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71051671 - 2³ = 71051663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71051677) 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 as a sum of consecutive naturals, namely, 35525835 + 35525836.

It is an arithmetic number, because the mean of its divisors is an integer number (35525836).

Almost surely, 2^71051671 is an apocalyptic number.

71051671 is a deficient number, since it is larger than the sum of its proper divisors (1).

71051671 is an equidigital number, since it uses as much as digits as its factorization.

71051671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 71051671 is about 8429.2153252838. The cubic root of 71051671 is about 414.1822013794.

Adding to 71051671 its reverse (17615017), we get a palindrome (88666688).

The spelling of 71051671 in words is "seventy-one million, fifty-one thousand, six hundred seventy-one".