516509135 has 16 divisors (see below), whose sum is σ = 640561152. Its totient is φ = 399405600.

The previous prime is 516509131. The next prime is 516509141. The reversal of 516509135 is 531905615.

It is a happy number.

It is not a de Polignac number, because 516509135 - 2² = 516509131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516509095 and 516509104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516509131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189452 + ... + 192158.

It is an arithmetic number, because the mean of its divisors is an integer number (40035072).

Almost surely, 2^516509135 is an apocalyptic number.

516509135 is a deficient number, since it is larger than the sum of its proper divisors (124052017).

516509135 is a wasteful number, since it uses less digits than its factorization.

516509135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 516509135 is about 22726.8373294658. The cubic root of 516509135 is about 802.3416469867.

The spelling of 516509135 in words is "five hundred sixteen million, five hundred nine thousand, one hundred thirty-five".