86571271 has 2 divisors, whose sum is σ = 86571272. Its totient is φ = 86571270.

The previous prime is 86571269. The next prime is 86571283. The reversal of 86571271 is 17217568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86571271 - 2¹ = 86571269 is a prime.

Together with 86571269, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86571271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86571071) 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, 43285635 + 43285636.

It is an arithmetic number, because the mean of its divisors is an integer number (43285636).

Almost surely, 2^86571271 is an apocalyptic number.

86571271 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571271 is an equidigital number, since it uses as much as digits as its factorization.

86571271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 86571271 is about 9304.3683826469. The cubic root of 86571271 is about 442.3757017323.

The spelling of 86571271 in words is "eighty-six million, five hundred seventy-one thousand, two hundred seventy-one".