220522 has 4 divisors (see below), whose sum is σ = 330786. Its totient is φ = 110260.

The previous prime is 220513. The next prime is 220529. The reversal of 220522 is 225022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 184041 + 36481 = 429^2 + 191^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (220529) by changing a digit.

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 as a sum of consecutive naturals, namely, 55129 + ... + 55132.

2²²⁰⁵²² is an apocalyptic number.

220522 is a deficient number, since it is larger than the sum of its proper divisors (110264).

220522 is a wasteful number, since it uses less digits than its factorization.

220522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110263.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 220522 is about 469.5977001647. The cubic root of 220522 is about 60.4158153401.

Adding to 220522 its reverse (225022), we get a palindrome (445544).

The spelling of 220522 in words is "two hundred twenty thousand, five hundred twenty-two".