505413506 has 8 divisors (see below), whose sum is σ = 816437244. Its totient is φ = 233267760.

The previous prime is 505413449. The next prime is 505413521. The reversal of 505413506 is 605314505.

It can be written as a sum of positive squares in 2 ways, for example, as 488807881 + 16605625 = 22109^2 + 4075^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9719465 + ... + 9719516.

Almost surely, 2^505413506 is an apocalyptic number.

505413506 is a deficient number, since it is larger than the sum of its proper divisors (311023738).

505413506 is a wasteful number, since it uses less digits than its factorization.

505413506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19438996.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 505413506 is about 22481.4035593866. The cubic root of 505413506 is about 796.5547182165.

Subtracting 505413506 from its reverse (605314505), we obtain a palindrome (99900999).

The spelling of 505413506 in words is "five hundred five million, four hundred thirteen thousand, five hundred six".