511028009 has 4 divisors (see below), whose sum is σ = 537924240. Its totient is φ = 484131780.

The previous prime is 511027999. The next prime is 511028017. The reversal of 511028009 is 900820115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 511028009 - 2²⁰ = 509979433 is a prime.

It is a super-2 number, since 2×511028009² = 522299251965008162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511028029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13448087 + ... + 13448124.

It is an arithmetic number, because the mean of its divisors is an integer number (134481060).

Almost surely, 2^511028009 is an apocalyptic number.

It is an amenable number.

511028009 is a deficient number, since it is larger than the sum of its proper divisors (26896231).

511028009 is a wasteful number, since it uses less digits than its factorization.

511028009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26896230.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 511028009 is about 22605.9286250311. The cubic root of 511028009 is about 799.4934339938.

The spelling of 511028009 in words is "five hundred eleven million, twenty-eight thousand, nine".