505103 has 4 divisors (see below), whose sum is σ = 527088. Its totient is φ = 483120.

The previous prime is 505097. The next prime is 505111. The reversal of 505103 is 301505.

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 505103 - 2¹⁶ = 439567 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 (505123) 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, 10958 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (131772).

2⁵⁰⁵¹⁰³ is an apocalyptic number.

505103 is a deficient number, since it is larger than the sum of its proper divisors (21985).

505103 is a wasteful number, since it uses less digits than its factorization.

505103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 505103 is about 710.7059870298. The cubic root of 505103 is about 79.6391560931.

Adding to 505103 its reverse (301505), we get a palindrome (806608).

The spelling of 505103 in words is "five hundred five thousand, one hundred three".