540522 has 12 divisors (see below), whose sum is σ = 1171170. Its totient is φ = 180168.

The previous prime is 540517. The next prime is 540539. The reversal of 540522 is 225045.

It can be written as a sum of positive squares in only one way, i.e., 301401 + 239121 = 549^2 + 489^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 30029 = 540522 / (5 + 4 + 0 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 540495 and 540504.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540522.

It is an unprimeable number.

540522 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14997 + ... + 15032.

2⁵⁴⁰⁵²² is an apocalyptic number.

540522 is an abundant number, since it is smaller than the sum of its proper divisors (630648).

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

540522 is a wasteful number, since it uses less digits than its factorization.

540522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30037 (or 30034 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 540522 is about 735.2020130549. The cubic root of 540522 is about 81.4587594178.

Adding to 540522 its reverse (225045), we get a palindrome (765567).

The spelling of 540522 in words is "five hundred forty thousand, five hundred twenty-two".