506115999 has 16 divisors (see below), whose sum is σ = 750687840. Its totient is φ = 337011840.

The previous prime is 506115971. The next prime is 506116019. The reversal of 506115999 is 999511605.

It is a happy number.

506115999 is a `hidden beast` number, since 50 + 6 + 1 + 1 + 599 + 9 = 666.

It is not a de Polignac number, because 506115999 - 2⁷ = 506115871 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506116999) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13149 + ... + 34425.

It is an arithmetic number, because the mean of its divisors is an integer number (46917990).

Almost surely, 2^506115999 is an apocalyptic number.

506115999 is a deficient number, since it is larger than the sum of its proper divisors (244571841).

506115999 is a wasteful number, since it uses less digits than its factorization.

506115999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22167 (or 22161 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 45.

The square root of 506115999 is about 22497.0220029230. The cubic root of 506115999 is about 796.9236010219.

The spelling of 506115999 in words is "five hundred six million, one hundred fifteen thousand, nine hundred ninety-nine".