512681871 has 16 divisors (see below), whose sum is σ = 736638336. Its totient is φ = 315290976.

The previous prime is 512681863. The next prime is 512681893. The reversal of 512681871 is 178186215.

It is not a de Polignac number, because 512681871 - 2³ = 512681863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512681861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74836 + ... + 81398.

It is an arithmetic number, because the mean of its divisors is an integer number (46039896).

Almost surely, 2^512681871 is an apocalyptic number.

512681871 is a deficient number, since it is larger than the sum of its proper divisors (223956465).

512681871 is a wasteful number, since it uses less digits than its factorization.

512681871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582.

The product of its digits is 26880, while the sum is 39.

The square root of 512681871 is about 22642.4793474566. The cubic root of 512681871 is about 800.3549836058.

The spelling of 512681871 in words is "five hundred twelve million, six hundred eighty-one thousand, eight hundred seventy-one".