86751571 has 4 divisors (see below), whose sum is σ = 86776200. Its totient is φ = 86726944.

The previous prime is 86751529. The next prime is 86751583. The reversal of 86751571 is 17515768.

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 86751571 - 2¹⁵ = 86718803 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86751871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5926 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (21694050).

Almost surely, 2^86751571 is an apocalyptic number.

86751571 is a deficient number, since it is larger than the sum of its proper divisors (24629).

86751571 is a wasteful number, since it uses less digits than its factorization.

86751571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24628.

The product of its digits is 58800, while the sum is 40.

The square root of 86751571 is about 9314.0523404155. The cubic root of 86751571 is about 442.6825973510.

The spelling of 86751571 in words is "eighty-six million, seven hundred fifty-one thousand, five hundred seventy-one".