513089509 has 4 divisors (see below), whose sum is σ = 540094240. Its totient is φ = 486084780.

The previous prime is 513089501. The next prime is 513089513. The reversal of 513089509 is 905980315.

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 513089509 - 2³ = 513089501 is a prime.

It is a super-2 number, since 2×513089509² = 526521688491722162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513089501) 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, 13502337 + ... + 13502374.

It is an arithmetic number, because the mean of its divisors is an integer number (135023560).

Almost surely, 2^513089509 is an apocalyptic number.

It is an amenable number.

513089509 is a deficient number, since it is larger than the sum of its proper divisors (27004731).

513089509 is a wasteful number, since it uses less digits than its factorization.

513089509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27004730.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 513089509 is about 22651.4791790735. The cubic root of 513089509 is about 800.5670505763.

The spelling of 513089509 in words is "five hundred thirteen million, eighty-nine thousand, five hundred nine".