505383 has 16 divisors (see below), whose sum is σ = 720480. Its totient is φ = 314496.

The previous prime is 505369. The next prime is 505399. The reversal of 505383 is 383505.

It is not a de Polignac number, because 505383 - 2⁴ = 505367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3141 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (45030).

2⁵⁰⁵³⁸³ is an apocalyptic number.

505383 is a deficient number, since it is larger than the sum of its proper divisors (215097).

505383 is a wasteful number, since it uses less digits than its factorization.

505383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 505383 is about 710.9029469625. The cubic root of 505383 is about 79.6538691612.

Adding to 505383 its reverse (383505), we get a palindrome (888888).

It can be divided in two parts, 505 and 383, that added together give a palindrome (888).

The spelling of 505383 in words is "five hundred five thousand, three hundred eighty-three".