505005218 has 16 divisors (see below), whose sum is σ = 797908320. Its totient is φ = 239053536.

The previous prime is 505005211. The next prime is 505005233. The reversal of 505005218 is 812500505.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505005211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69221 + ... + 76167.

It is an arithmetic number, because the mean of its divisors is an integer number (49869270).

Almost surely, 2^505005218 is an apocalyptic number.

505005218 is a deficient number, since it is larger than the sum of its proper divisors (292903102).

505005218 is a wasteful number, since it uses less digits than its factorization.

505005218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8881.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 505005218 is about 22472.3211529205. The cubic root of 505005218 is about 796.3401669343.

The spelling of 505005218 in words is "five hundred five million, five thousand, two hundred eighteen".