515673873 has 24 divisors (see below), whose sum is σ = 875085120. Its totient is φ = 288488160.

The previous prime is 515673863. The next prime is 515673913. The reversal of 515673873 is 378376515.

515673873 is a `hidden beast` number, since 5 + 1 + 567 + 3 + 87 + 3 = 666.

It is not a de Polignac number, because 515673873 - 2¹⁷ = 515542801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515673803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199053 + ... + 201626.

It is an arithmetic number, because the mean of its divisors is an integer number (36461880).

Almost surely, 2^515673873 is an apocalyptic number.

It is an amenable number.

515673873 is a deficient number, since it is larger than the sum of its proper divisors (359411247).

515673873 is a wasteful number, since it uses less digits than its factorization.

515673873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400709 (or 400706 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 515673873 is about 22708.4537782739. The cubic root of 515673873 is about 801.9089169430.

It can be divided in two parts, 51 and 5673873, that added together give a square (5673924 = 2382²).

The spelling of 515673873 in words is "five hundred fifteen million, six hundred seventy-three thousand, eight hundred seventy-three".