505344 has 80 divisors (see below), whose sum is σ = 1571328. Its totient is φ = 141312.

The previous prime is 505339. The next prime is 505357. The reversal of 505344 is 443505.

It is a happy number.

505344 is nontrivially palindromic in base 15.

505344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 505344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10729 + ... + 10775.

2⁵⁰⁵³⁴⁴ 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 505344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785664).

505344 is an abundant number, since it is smaller than the sum of its proper divisors (1065984).

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

505344 is an equidigital number, since it uses as much as digits as its factorization.

505344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 505344 is about 710.8755165287. The cubic root of 505344 is about 79.6518201668.

Adding to 505344 its reverse (443505), we get a palindrome (948849).

The spelling of 505344 in words is "five hundred five thousand, three hundred forty-four".