520213518 has 48 divisors (see below), whose sum is σ = 1232330112. Its totient is φ = 157290000.

The previous prime is 520213487. The next prime is 520213543. The reversal of 520213518 is 815312025.

It is a happy number.

520213518 is a `hidden beast` number, since 520 + 2 + 135 + 1 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 520213491 and 520213500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94543 + ... + 99893.

It is an arithmetic number, because the mean of its divisors is an integer number (25673544).

Almost surely, 2^520213518 is an apocalyptic number.

520213518 is an abundant number, since it is smaller than the sum of its proper divisors (712116594).

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

520213518 is a wasteful number, since it uses less digits than its factorization.

520213518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861 (or 5858 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 520213518 is about 22808.1897133464. The cubic root of 520213518 is about 804.2552004161.

The spelling of 520213518 in words is "five hundred twenty million, two hundred thirteen thousand, five hundred eighteen".