573503 has 4 divisors (see below), whose sum is σ = 655440. Its totient is φ = 491568.

The previous prime is 573497. The next prime is 573509. The reversal of 573503 is 305375.

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

It is an interprime number because it is at equal distance from previous prime (573497) and next prime (573509).

It is not a de Polignac number, because 573503 - 2⁴ = 573487 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 (573509) 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, 40958 + ... + 40971.

It is an arithmetic number, because the mean of its divisors is an integer number (163860).

2⁵⁷³⁵⁰³ is an apocalyptic number.

573503 is a deficient number, since it is larger than the sum of its proper divisors (81937).

573503 is an equidigital number, since it uses as much as digits as its factorization.

573503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81936.

The product of its (nonzero) digits is 1575, while the sum is 23.

The square root of 573503 is about 757.2998085303. The cubic root of 573503 is about 83.0829479952.

Adding to 573503 its reverse (305375), we get a palindrome (878878).

The spelling of 573503 in words is "five hundred seventy-three thousand, five hundred three".