83851 has 4 divisors (see below), whose sum is σ = 85104. Its totient is φ = 82600.

The previous prime is 83843. The next prime is 83857. The reversal of 83851 is 15838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15838 = 2 ⋅7919.

It is a cyclic number.

It is not a de Polignac number, because 83851 - 2³ = 83843 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (83857) 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, 520 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (21276).

2⁸³⁸⁵¹ is an apocalyptic number.

83851 is the 130-th centered decagonal number.

83851 is a deficient number, since it is larger than the sum of its proper divisors (1253).

83851 is a wasteful number, since it uses less digits than its factorization.

83851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its digits is 960, while the sum is 25.

The square root of 83851 is about 289.5703714125. The cubic root of 83851 is about 43.7692812971.

The spelling of 83851 in words is "eighty-three thousand, eight hundred fifty-one".