505055566 has 8 divisors (see below), whose sum is σ = 763366824. Its totient is φ = 250599960.

The previous prime is 505055563. The next prime is 505055591. The reversal of 505055566 is 665550505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×505055566² = 510162249495160712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055563) 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, 963585 + ... + 964108.

It is an arithmetic number, because the mean of its divisors is an integer number (95420853).

Almost surely, 2^505055566 is an apocalyptic number.

505055566 is a deficient number, since it is larger than the sum of its proper divisors (258311258).

505055566 is a wasteful number, since it uses less digits than its factorization.

505055566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927826.

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 505055566 is about 22473.4413475106. The cubic root of 505055566 is about 796.3666305568.

The spelling of 505055566 in words is "five hundred five million, fifty-five thousand, five hundred sixty-six".