513832009 has 4 divisors (see below), whose sum is σ = 514058004. Its totient is φ = 513606016.

The previous prime is 513831961. The next prime is 513832027. The reversal of 513832009 is 900238315.

It is a happy number.

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 255104784 + 258727225 = 15972^2 + 16085^2 .

It is a cyclic number.

It is not a de Polignac number, because 513832009 - 2¹¹ = 513829961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513832309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109552 + ... + 114145.

It is an arithmetic number, because the mean of its divisors is an integer number (128514501).

Almost surely, 2^513832009 is an apocalyptic number.

It is an amenable number.

513832009 is a deficient number, since it is larger than the sum of its proper divisors (225995).

513832009 is a wasteful number, since it uses less digits than its factorization.

513832009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225994.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 513832009 is about 22667.8629120612. The cubic root of 513832009 is about 800.9530355574.

The spelling of 513832009 in words is "five hundred thirteen million, eight hundred thirty-two thousand, nine".