505005556 has 12 divisors (see below), whose sum is σ = 964101600. Its totient is φ = 229547960.

The previous prime is 505005521. The next prime is 505005559. The reversal of 505005556 is 655500505.

It is a super-2 number, since 2×505005556² = 510061223181738272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505005559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5738656 + ... + 5738743.

It is an arithmetic number, because the mean of its divisors is an integer number (80341800).

Almost surely, 2^505005556 is an apocalyptic number.

It is an amenable number.

505005556 is a deficient number, since it is larger than the sum of its proper divisors (459096044).

505005556 is a wasteful number, since it uses less digits than its factorization.

505005556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11477414 (or 11477412 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 505005556 is about 22472.3286732817. The cubic root of 505005556 is about 796.3403445977.

The spelling of 505005556 in words is "five hundred five million, five thousand, five hundred fifty-six".