505530506 has 8 divisors (see below), whose sum is σ = 816626244. Its totient is φ = 233321760.

The previous prime is 505530503. The next prime is 505530527. The reversal of 505530506 is 605035505.

It can be written as a sum of positive squares in 2 ways, for example, as 502163281 + 3367225 = 22409^2 + 1835^2 .

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

It is a super-2 number, since 2×505530506² = 511122184993232072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505530503) 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, 9721715 + ... + 9721766.

Almost surely, 2^505530506 is an apocalyptic number.

505530506 is a deficient number, since it is larger than the sum of its proper divisors (311095738).

505530506 is a wasteful number, since it uses less digits than its factorization.

505530506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19443496.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 505530506 is about 22484.0055595083. The cubic root of 505530506 is about 796.6161792514.

The spelling of 505530506 in words is "five hundred five million, five hundred thirty thousand, five hundred six".