823055 has 16 divisors (see below), whose sum is σ = 1093824. Its totient is φ = 591360.

The previous prime is 823051. The next prime is 823117. The reversal of 823055 is 550328.

It is not a de Polignac number, because 823055 - 2² = 823051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 823055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823051) 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 15 ways as a sum of consecutive naturals, for example, 1745 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (68364).

2⁸²³⁰⁵⁵ is an apocalyptic number.

823055 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

823055 is a deficient number, since it is larger than the sum of its proper divisors (270769).

823055 is a wasteful number, since it uses less digits than its factorization.

823055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 823055 is about 907.2237871661. The cubic root of 823055 is about 93.7151099799.

The spelling of 823055 in words is "eight hundred twenty-three thousand, fifty-five".