855567 has 6 divisors (see below), whose sum is σ = 1235832. Its totient is φ = 570372.

The previous prime is 855527. The next prime is 855581. The reversal of 855567 is 765558.

855567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 855567 - 2⁸ = 855311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47523 + ... + 47540.

It is an arithmetic number, because the mean of its divisors is an integer number (205972).

2⁸⁵⁵⁵⁶⁷ is an apocalyptic number.

855567 is a deficient number, since it is larger than the sum of its proper divisors (380265).

855567 is a wasteful number, since it uses less digits than its factorization.

855567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95069 (or 95066 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 855567 is about 924.9686481173. The cubic root of 855567 is about 94.9331755357.

Subtracting from 855567 its reverse (765558), we obtain a palindrome (90009).

The spelling of 855567 in words is "eight hundred fifty-five thousand, five hundred sixty-seven".