71279471 has 2 divisors, whose sum is σ = 71279472. Its totient is φ = 71279470.

The previous prime is 71279459. The next prime is 71279473. The reversal of 71279471 is 17497217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71279471 - 2⁶ = 71279407 is a prime.

It is a super-3 number, since 3×71279471³ (a number of 25 digits) contains 333 as substring.

Together with 71279473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71279473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35639735 + 35639736.

It is an arithmetic number, because the mean of its divisors is an integer number (35639736).

Almost surely, 2^71279471 is an apocalyptic number.

71279471 is a deficient number, since it is larger than the sum of its proper divisors (1).

71279471 is an equidigital number, since it uses as much as digits as its factorization.

71279471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 38.

The square root of 71279471 is about 8442.7170389632. The cubic root of 71279471 is about 414.6243680928.

The spelling of 71279471 in words is "seventy-one million, two hundred seventy-nine thousand, four hundred seventy-one".