523789 has 4 divisors (see below), whose sum is σ = 598624. Its totient is φ = 448956.

The previous prime is 523777. The next prime is 523793. The reversal of 523789 is 987325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523789 - 2¹³ = 515597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37407 + ... + 37420.

It is an arithmetic number, because the mean of its divisors is an integer number (149656).

2⁵²³⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

523789 is a deficient number, since it is larger than the sum of its proper divisors (74835).

523789 is an equidigital number, since it uses as much as digits as its factorization.

523789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74834.

The product of its digits is 15120, while the sum is 34.

The square root of 523789 is about 723.7326854578. The cubic root of 523789 is about 80.6093571799.

The spelling of 523789 in words is "five hundred twenty-three thousand, seven hundred eighty-nine".