506775309 has 4 divisors (see below), whose sum is σ = 675700416. Its totient is φ = 337850204.

The previous prime is 506775299. The next prime is 506775317. The reversal of 506775309 is 903577605.

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 a cyclic number.

It is not a de Polignac number, because 506775309 - 2¹³ = 506767117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506775329) 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, 84462549 + ... + 84462554.

It is an arithmetic number, because the mean of its divisors is an integer number (168925104).

Almost surely, 2^506775309 is an apocalyptic number.

It is an amenable number.

506775309 is a deficient number, since it is larger than the sum of its proper divisors (168925107).

506775309 is a wasteful number, since it uses less digits than its factorization.

506775309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168925106.

The product of its (nonzero) digits is 198450, while the sum is 42.

The square root of 506775309 is about 22511.6705066505. The cubic root of 506775309 is about 797.2694978211.

The spelling of 506775309 in words is "five hundred six million, seven hundred seventy-five thousand, three hundred nine".