522018 has 32 divisors (see below), whose sum is σ = 1326720. Its totient is φ = 149040.

The previous prime is 522017. The next prime is 522037. The reversal of 522018 is 810225.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 5⁸ + 2⁸ + 0 + 2¹⁷ + 1 + 8² .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522018.

It is not an unprimeable number, because it can be changed into a prime (522017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (41460).

2⁵²²⁰¹⁸ is an apocalyptic number.

522018 is an abundant number, since it is smaller than the sum of its proper divisors (804702).

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

522018 is a wasteful number, since it uses less digits than its factorization.

522018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 522018 is about 722.5081314421. The cubic root of 522018 is about 80.5184042896.

The spelling of 522018 in words is "five hundred twenty-two thousand, eighteen".