86217571 has 8 divisors (see below), whose sum is σ = 94302000. Its totient is φ = 78174240.

The previous prime is 86217563. The next prime is 86217587. The reversal of 86217571 is 17571268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86217571 - 2³ = 86217563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86217571.

It is not an unprimeable number, because it can be changed into a prime (86217371) 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 in 7 ways as a sum of consecutive naturals, for example, 5796 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (11787750).

Almost surely, 2^86217571 is an apocalyptic number.

86217571 is a deficient number, since it is larger than the sum of its proper divisors (8084429).

86217571 is a wasteful number, since it uses less digits than its factorization.

86217571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20549.

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

The square root of 86217571 is about 9285.3417276910. The cubic root of 86217571 is about 441.7724151358.

The spelling of 86217571 in words is "eighty-six million, two hundred seventeen thousand, five hundred seventy-one".