505557212 has 12 divisors (see below), whose sum is σ = 887262600. Its totient is φ = 252053616.

The previous prime is 505557209. The next prime is 505557223. The reversal of 505557212 is 212755505.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 179678 + ... + 182469.

It is an arithmetic number, because the mean of its divisors is an integer number (73938550).

Almost surely, 2^505557212 is an apocalyptic number.

It is an amenable number.

505557212 is a deficient number, since it is larger than the sum of its proper divisors (381705388).

505557212 is a wasteful number, since it uses less digits than its factorization.

505557212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362500 (or 362498 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 505557212 is about 22484.5994405059. The cubic root of 505557212 is about 796.6302067973.

The spelling of 505557212 in words is "five hundred five million, five hundred fifty-seven thousand, two hundred twelve".