501505506 has 20 divisors (see below), whose sum is σ = 1123744182. Its totient is φ = 167168448.

The previous prime is 501505489. The next prime is 501505531. The reversal of 501505506 is 605505105.

501505506 is a `hidden beast` number, since 5 + 0 + 150 + 5 + 506 = 666.

It can be written as a sum of positive squares in only one way, i.e., 447703281 + 53802225 = 21159^2 + 7335^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 501505506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1547695 + ... + 1548018.

Almost surely, 2^501505506 is an apocalyptic number.

501505506 is an abundant number, since it is smaller than the sum of its proper divisors (622238676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501505506 is a wasteful number, since it uses less digits than its factorization.

501505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095727 (or 3095718 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 501505506 is about 22394.3186098617. The cubic root of 501505506 is about 794.4963417169.

The spelling of 501505506 in words is "five hundred one million, five hundred five thousand, five hundred six".