505324403 has 4 divisors (see below), whose sum is σ = 506379840. Its totient is φ = 504268968.

The previous prime is 505324387. The next prime is 505324441. The reversal of 505324403 is 304423505.

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 505324403 - 2⁴ = 505324387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505324493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527000 + ... + 527957.

It is an arithmetic number, because the mean of its divisors is an integer number (126594960).

Almost surely, 2^505324403 is an apocalyptic number.

505324403 is a deficient number, since it is larger than the sum of its proper divisors (1055437).

505324403 is a wasteful number, since it uses less digits than its factorization.

505324403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055436.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 505324403 is about 22479.4217674744. The cubic root of 505324403 is about 796.5079053358.

Adding to 505324403 its reverse (304423505), we get a palindrome (809747908).

The spelling of 505324403 in words is "five hundred five million, three hundred twenty-four thousand, four hundred three".