520858387 has 12 divisors (see below), whose sum is σ = 608053656. Its totient is φ = 444860640.

The previous prime is 520858379. The next prime is 520858399. The reversal of 520858387 is 783858025.

It is not a de Polignac number, because 520858387 - 2³ = 520858379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520858367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4914 + ... + 32647.

It is an arithmetic number, because the mean of its divisors is an integer number (50671138).

Almost surely, 2^520858387 is an apocalyptic number.

520858387 is a deficient number, since it is larger than the sum of its proper divisors (87195269).

520858387 is a wasteful number, since it uses less digits than its factorization.

520858387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37858 (or 37851 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 520858387 is about 22822.3221211164. The cubic root of 520858387 is about 804.5873877908.

The spelling of 520858387 in words is "five hundred twenty million, eight hundred fifty-eight thousand, three hundred eighty-seven".