5209823 has 2 divisors, whose sum is σ = 5209824. Its totient is φ = 5209822.

The previous prime is 5209817. The next prime is 5209849. The reversal of 5209823 is 3289025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5209823 - 2¹⁰ = 5208799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5206823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604911 + 2604912.

It is an arithmetic number, because the mean of its divisors is an integer number (2604912).

Almost surely, 2^5209823 is an apocalyptic number.

5209823 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209823 is an equidigital number, since it uses as much as digits as its factorization.

5209823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 5209823 is about 2282.5036692194. The cubic root of 5209823 is about 173.3568430472.

The spelling of 5209823 in words is "five million, two hundred nine thousand, eight hundred twenty-three".