513255516 has 24 divisors (see below), whose sum is σ = 1201927440. Its totient is φ = 170466432.

The previous prime is 513255487. The next prime is 513255553. The reversal of 513255516 is 615552315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73881 + ... + 80528.

It is an arithmetic number, because the mean of its divisors is an integer number (50080310).

Almost surely, 2^513255516 is an apocalyptic number.

It is an amenable number.

513255516 is an abundant number, since it is smaller than the sum of its proper divisors (688671924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513255516 is a wasteful number, since it uses less digits than its factorization.

513255516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154693 (or 154691 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The square root of 513255516 is about 22655.1432571061. The cubic root of 513255516 is about 800.6533808050.

The spelling of 513255516 in words is "five hundred thirteen million, two hundred fifty-five thousand, five hundred sixteen".