86251 has 4 divisors (see below), whose sum is σ = 94104. Its totient is φ = 78400.

The previous prime is 86249. The next prime is 86257. The reversal of 86251 is 15268.

It is a happy number.

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 86251 - 2¹ = 86249 is a prime.

It is a Smith number, since the sum of its digits (22) 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 (86257) 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, 3910 + ... + 3931.

It is an arithmetic number, because the mean of its divisors is an integer number (23526).

2⁸⁶²⁵¹ is an apocalyptic number.

86251 is a deficient number, since it is larger than the sum of its proper divisors (7853).

86251 is a wasteful number, since it uses less digits than its factorization.

86251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852.

The product of its digits is 480, while the sum is 22.

The square root of 86251 is about 293.6852056199. The cubic root of 86251 is about 44.1829503661.

The spelling of 86251 in words is "eighty-six thousand, two hundred fifty-one".