180522 has 16 divisors (see below), whose sum is σ = 401280. Its totient is φ = 60156.

The previous prime is 180511. The next prime is 180533. The reversal of 180522 is 225081.

It is an interprime number because it is at equal distance from previous prime (180511) and next prime (180533).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 180495 and 180504.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 180522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (25080).

2¹⁸⁰⁵²² is an apocalyptic number.

180522 is an abundant number, since it is smaller than the sum of its proper divisors (220758).

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

180522 is a wasteful number, since it uses less digits than its factorization.

180522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3348 counting only the distinct ones).

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

The square root of 180522 is about 424.8788062495. The cubic root of 180522 is about 56.5166891466.

The spelling of 180522 in words is "one hundred eighty thousand, five hundred twenty-two".