503243 has 4 divisors (see below), whose sum is σ = 541968. Its totient is φ = 464520.

The previous prime is 503233. The next prime is 503249. The reversal of 503243 is 342305.

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 503243 - 2⁴ = 503227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19343 + ... + 19368.

It is an arithmetic number, because the mean of its divisors is an integer number (135492).

2⁵⁰³²⁴³ is an apocalyptic number.

503243 is a deficient number, since it is larger than the sum of its proper divisors (38725).

503243 is a wasteful number, since it uses less digits than its factorization.

503243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38724.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 503243 is about 709.3962221495. The cubic root of 503243 is about 79.5412809882.

Adding to 503243 its reverse (342305), we get a palindrome (845548).

The spelling of 503243 in words is "five hundred three thousand, two hundred forty-three".