5205823 has 4 divisors (see below), whose sum is σ = 5949520. Its totient is φ = 4462128.

The previous prime is 5205817. The next prime is 5205839. The reversal of 5205823 is 3285025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5205823 is a prime.

It is a Duffinian number.

5205823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371838 + ... + 371851.

It is an arithmetic number, because the mean of its divisors is an integer number (1487380).

Almost surely, 2^5205823 is an apocalyptic number.

5205823 is a deficient number, since it is larger than the sum of its proper divisors (743697).

5205823 is an equidigital number, since it uses as much as digits as its factorization.

5205823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743696.

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

The square root of 5205823 is about 2281.6272701736. The cubic root of 5205823 is about 173.3124650255.

The spelling of 5205823 in words is "five million, two hundred five thousand, eight hundred twenty-three".