2175823 has 16 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 1815264.

The previous prime is 2175793. The next prime is 2175827. The reversal of 2175823 is 3285712.

2175823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2175823 - 2⁵ = 2175791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2175791 and 2175800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2175827) 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, 5490 + ... + 5872.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^2175823 is an apocalyptic number.

2175823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2175823 is a deficient number, since it is larger than the sum of its proper divisors (404657).

2175823 is a wasteful number, since it uses less digits than its factorization.

2175823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its digits is 3360, while the sum is 28.

The square root of 2175823 is about 1475.0671171170. The cubic root of 2175823 is about 129.5809584063.

The spelling of 2175823 in words is "two million, one hundred seventy-five thousand, eight hundred twenty-three".