509217135 has 16 divisors (see below), whose sum is σ = 931140096. Its totient is φ = 232784928.

The previous prime is 509217127. The next prime is 509217139. The reversal of 509217135 is 531712905.

It is not a de Polignac number, because 509217135 - 2³ = 509217127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 509217096 and 509217105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509217139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424739 + ... + 2424948.

It is an arithmetic number, because the mean of its divisors is an integer number (58196256).

Almost surely, 2^509217135 is an apocalyptic number.

509217135 is a deficient number, since it is larger than the sum of its proper divisors (421922961).

509217135 is a wasteful number, since it uses less digits than its factorization.

509217135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849702.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 509217135 is about 22565.8400020917. The cubic root of 509217135 is about 798.5479572050.

The spelling of 509217135 in words is "five hundred nine million, two hundred seventeen thousand, one hundred thirty-five".