853855 has 8 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 679776.

The previous prime is 853843. The next prime is 853873. The reversal of 853855 is 558358.

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 853855 - 2⁵ = 853823 is a prime.

It is a super-2 number, since 2×853855² = 1458136722050, which contains 22 as substring.

853855 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 853855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1726 + ... + 2164.

It is an arithmetic number, because the mean of its divisors is an integer number (128700).

2⁸⁵³⁸⁵⁵ is an apocalyptic number.

853855 is a deficient number, since it is larger than the sum of its proper divisors (175745).

853855 is a wasteful number, since it uses less digits than its factorization.

853855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833.

The product of its digits is 24000, while the sum is 34.

The square root of 853855 is about 924.0427479289. The cubic root of 853855 is about 94.8698124395.

The spelling of 853855 in words is "eight hundred fifty-three thousand, eight hundred fifty-five".