523320 has 96 divisors (see below), whose sum is σ = 1846800. Its totient is φ = 118272.

The previous prime is 523307. The next prime is 523333. The reversal of 523320 is 23325.

It is an interprime number because it is at equal distance from previous prime (523307) and next prime (523333).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 523320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5836 + ... + 5924.

2⁵²³³²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923400).

523320 is an abundant number, since it is smaller than the sum of its proper divisors (1323480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523320 is a wasteful number, since it uses less digits than its factorization.

523320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 523320 is about 723.4085982348. The cubic root of 523320 is about 80.5852908238.

Adding to 523320 its reverse (23325), we get a palindrome (546645).

It can be divided in two parts, 5233 and 20, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 523320 in words is "five hundred twenty-three thousand, three hundred twenty".