503233530 has 64 divisors (see below), whose sum is σ = 1244706048. Its totient is φ = 130152960.

The previous prime is 503233529. The next prime is 503233567. The reversal of 503233530 is 35332305.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 503233530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131707 + ... + 135473.

It is an arithmetic number, because the mean of its divisors is an integer number (19448532).

Almost surely, 2^503233530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503233530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622353024).

503233530 is an abundant number, since it is smaller than the sum of its proper divisors (741472518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503233530 is a wasteful number, since it uses less digits than its factorization.

503233530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 4050, while the sum is 24.

The square root of 503233530 is about 22432.8671818829. The cubic root of 503233530 is about 795.4078205054.

Adding to 503233530 its reverse (35332305), we get a palindrome (538565835).

The spelling of 503233530 in words is "five hundred three million, two hundred thirty-three thousand, five hundred thirty".