513255520 has 24 divisors (see below), whose sum is σ = 1212566544. Its totient is φ = 205302144.

The previous prime is 513255487. The next prime is 513255553. The reversal of 513255520 is 25552315.

It is an interprime number because it is at equal distance from previous prime (513255487) and next prime (513255553).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603764 + ... + 1604083.

It is an arithmetic number, because the mean of its divisors is an integer number (50523606).

Almost surely, 2^513255520 is an apocalyptic number.

It is an amenable number.

513255520 is an abundant number, since it is smaller than the sum of its proper divisors (699311024).

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

513255520 is a wasteful number, since it uses less digits than its factorization.

513255520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207862 (or 3207854 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 513255520 is about 22655.1433453863. The cubic root of 513255520 is about 800.6533828849.

The spelling of 513255520 in words is "five hundred thirteen million, two hundred fifty-five thousand, five hundred twenty".