513288109 has 4 divisors (see below), whose sum is σ = 516687520. Its totient is φ = 509888700.

The previous prime is 513288103. The next prime is 513288121. The reversal of 513288109 is 901882315.

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 513288109 - 2³ = 513288101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513288101) 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, 1699479 + ... + 1699780.

It is an arithmetic number, because the mean of its divisors is an integer number (129171880).

Almost surely, 2^513288109 is an apocalyptic number.

It is an amenable number.

513288109 is a deficient number, since it is larger than the sum of its proper divisors (3399411).

513288109 is a wasteful number, since it uses less digits than its factorization.

513288109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399410.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 513288109 is about 22655.8625746185. The cubic root of 513288109 is about 800.6703282723.

The spelling of 513288109 in words is "five hundred thirteen million, two hundred eighty-eight thousand, one hundred nine".