86551871 has 8 divisors (see below), whose sum is σ = 99268224. Its totient is φ = 73923480.

The previous prime is 86551867. The next prime is 86551891. The reversal of 86551871 is 17815568.

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 86551871 - 2² = 86551867 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 (86551891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19865 + ... + 23826.

It is an arithmetic number, because the mean of its divisors is an integer number (12408528).

Almost surely, 2^86551871 is an apocalyptic number.

86551871 is a deficient number, since it is larger than the sum of its proper divisors (12716353).

86551871 is a wasteful number, since it uses less digits than its factorization.

86551871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43981.

The product of its digits is 67200, while the sum is 41.

The square root of 86551871 is about 9303.3258031738. The cubic root of 86551871 is about 442.3426548579.

The spelling of 86551871 in words is "eighty-six million, five hundred fifty-one thousand, eight hundred seventy-one".