855223 has 4 divisors (see below), whose sum is σ = 857248. Its totient is φ = 853200.

The previous prime is 855221. The next prime is 855229. The reversal of 855223 is 322558.

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 855223 - 2¹ = 855221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111 + ... + 1312.

It is an arithmetic number, because the mean of its divisors is an integer number (214312).

2⁸⁵⁵²²³ is an apocalyptic number.

855223 is a deficient number, since it is larger than the sum of its proper divisors (2025).

855223 is a wasteful number, since it uses less digits than its factorization.

855223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024.

The product of its digits is 2400, while the sum is 25.

The square root of 855223 is about 924.7826771734. The cubic root of 855223 is about 94.9204504889.

The spelling of 855223 in words is "eight hundred fifty-five thousand, two hundred twenty-three".