220954 has 4 divisors (see below), whose sum is σ = 331434. Its totient is φ = 110476.

The previous prime is 220939. The next prime is 220973. The reversal of 220954 is 459022.

It is a happy number.

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., 178929 + 42025 = 423^2 + 205^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 55237 + ... + 55240.

2²²⁰⁹⁵⁴ is an apocalyptic number.

220954 is a deficient number, since it is larger than the sum of its proper divisors (110480).

220954 is a wasteful number, since it uses less digits than its factorization.

220954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110479.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 220954 is about 470.0574432982. The cubic root of 220954 is about 60.4552408967.

Adding to 220954 its reverse (459022), we get a palindrome (679976).

The spelling of 220954 in words is "two hundred twenty thousand, nine hundred fifty-four".