509053705 has 4 divisors (see below), whose sum is σ = 610864452. Its totient is φ = 407242960.

The previous prime is 509053673. The next prime is 509053709. The reversal of 509053705 is 507350905.

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

It can be written as a sum of positive squares in 2 ways, for example, as 113998329 + 395055376 = 10677^2 + 19876^2 .

It is not a de Polignac number, because 509053705 - 2⁵ = 509053673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509053709) 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, 50905366 + ... + 50905375.

It is an arithmetic number, because the mean of its divisors is an integer number (152716113).

Almost surely, 2^509053705 is an apocalyptic number.

It is an amenable number.

509053705 is a deficient number, since it is larger than the sum of its proper divisors (101810747).

509053705 is a wasteful number, since it uses less digits than its factorization.

509053705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101810746.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 509053705 is about 22562.2185301003. The cubic root of 509053705 is about 798.4625184351.

The spelling of 509053705 in words is "five hundred nine million, fifty-three thousand, seven hundred five".