854851 has 4 divisors (see below), whose sum is σ = 869400. Its totient is φ = 840304.

The previous prime is 854849. The next prime is 854869. The reversal of 854851 is 158458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158458 = 2 ⋅79229.

It is a cyclic number.

It is not a de Polignac number, because 854851 - 2¹ = 854849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854801) 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, 7186 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (217350).

2⁸⁵⁴⁸⁵¹ is an apocalyptic number.

854851 is a deficient number, since it is larger than the sum of its proper divisors (14549).

854851 is a wasteful number, since it uses less digits than its factorization.

854851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14548.

The product of its digits is 6400, while the sum is 31.

The square root of 854851 is about 924.5815269623. The cubic root of 854851 is about 94.9066858418.

The spelling of 854851 in words is "eight hundred fifty-four thousand, eight hundred fifty-one".