86512271 has 4 divisors (see below), whose sum is σ = 88144632. Its totient is φ = 84879912.

The previous prime is 86512267. The next prime is 86512277. The reversal of 86512271 is 17221568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86512271 - 2² = 86512267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86512277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816101 + ... + 816206.

It is an arithmetic number, because the mean of its divisors is an integer number (22036158).

Almost surely, 2^86512271 is an apocalyptic number.

86512271 is a deficient number, since it is larger than the sum of its proper divisors (1632361).

86512271 is a wasteful number, since it uses less digits than its factorization.

86512271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632360.

The product of its digits is 6720, while the sum is 32.

The square root of 86512271 is about 9301.1972885215. The cubic root of 86512271 is about 442.2751830206.

The spelling of 86512271 in words is "eighty-six million, five hundred twelve thousand, two hundred seventy-one".