509117159 has 4 divisors (see below), whose sum is σ = 515561760. Its totient is φ = 502672560.

The previous prime is 509117153. The next prime is 509117171. The reversal of 509117159 is 951711905.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 509117159 - 2⁸ = 509116903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509117153) 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, 3222182 + ... + 3222339.

It is an arithmetic number, because the mean of its divisors is an integer number (128890440).

Almost surely, 2^509117159 is an apocalyptic number.

509117159 is a deficient number, since it is larger than the sum of its proper divisors (6444601).

509117159 is an equidigital number, since it uses as much as digits as its factorization.

509117159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444600.

The product of its (nonzero) digits is 14175, while the sum is 38.

The square root of 509117159 is about 22563.6246866500. The cubic root of 509117159 is about 798.4956934126.

The spelling of 509117159 in words is "five hundred nine million, one hundred seventeen thousand, one hundred fifty-nine".