512220503 has 4 divisors (see below), whose sum is σ = 524713728. Its totient is φ = 499727280.

The previous prime is 512220481. The next prime is 512220509. The reversal of 512220503 is 305022215.

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 512220503 - 2⁶ = 512220439 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 (512220509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6246551 + ... + 6246632.

It is an arithmetic number, because the mean of its divisors is an integer number (131178432).

Almost surely, 2^512220503 is an apocalyptic number.

512220503 is a deficient number, since it is larger than the sum of its proper divisors (12493225).

512220503 is a wasteful number, since it uses less digits than its factorization.

512220503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12493224.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 512220503 is about 22632.2889474308. The cubic root of 512220503 is about 800.1148288296.

Adding to 512220503 its reverse (305022215), we get a palindrome (817242718).

The spelling of 512220503 in words is "five hundred twelve million, two hundred twenty thousand, five hundred three".