505512450203 has 4 divisors (see below), whose sum is σ = 505837958808. Its totient is φ = 505186941600.

The previous prime is 505512450187. The next prime is 505512450217. The reversal of 505512450203 is 302054215505.

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 505512450203 - 2⁴ = 505512450187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505512450203.

It is not an unprimeable number, because it can be changed into a prime (505512450283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 162751973 + ... + 162755078.

It is an arithmetic number, because the mean of its divisors is an integer number (126459489702).

Almost surely, 2^505512450203 is an apocalyptic number.

505512450203 is a deficient number, since it is larger than the sum of its proper divisors (325508605).

505512450203 is a wasteful number, since it uses less digits than its factorization.

505512450203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325508604.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 505512450203 its reverse (302054215505), we get a palindrome (807566665708).

The spelling of 505512450203 in words is "five hundred five billion, five hundred twelve million, four hundred fifty thousand, two hundred three".