505303 has 4 divisors (see below), whose sum is σ = 510408. Its totient is φ = 500200.

The previous prime is 505301. The next prime is 505313. The reversal of 505303 is 303505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505303 - 2¹ = 505301 is a prime.

It is a super-2 number, since 2×505303² = 510662243618, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2401 + ... + 2602.

It is an arithmetic number, because the mean of its divisors is an integer number (127602).

2⁵⁰⁵³⁰³ is an apocalyptic number.

505303 is a deficient number, since it is larger than the sum of its proper divisors (5105).

505303 is a wasteful number, since it uses less digits than its factorization.

505303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 505303 is about 710.8466782647. The cubic root of 505303 is about 79.6496659821.

Adding to 505303 its reverse (303505), we get a palindrome (808808).

It can be divided in two parts, 505 and 303, that added together give a palindrome (808).

The spelling of 505303 in words is "five hundred five thousand, three hundred three".