220554 has 12 divisors (see below), whose sum is σ = 477906. Its totient is φ = 73512.

The previous prime is 220553. The next prime is 220559. The reversal of 220554 is 455022.

220554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 189225 + 31329 = 435^2 + 177^2 .

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), and also a Moran number because the ratio is a prime number: 12253 = 220554 / (2 + 2 + 0 + 5 + 5 + 4).

It is a Curzon number.

It is a nialpdrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220554.

It is not an unprimeable number, because it can be changed into a prime (220553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6109 + ... + 6144.

2²²⁰⁵⁵⁴ is an apocalyptic number.

220554 is an abundant number, since it is smaller than the sum of its proper divisors (257352).

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

220554 is a wasteful number, since it uses less digits than its factorization.

220554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261 (or 12258 counting only the distinct ones).

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

The square root of 220554 is about 469.6317706459. The cubic root of 220554 is about 60.4187375165.

Adding to 220554 its reverse (455022), we get a palindrome (675576).

The spelling of 220554 in words is "two hundred twenty thousand, five hundred fifty-four".