55222 has 4 divisors (see below), whose sum is σ = 82836. Its totient is φ = 27610.

The previous prime is 55219. The next prime is 55229. The reversal of 55222 is 22255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22255 = 5 ⋅4451.

It is a plaindrome in base 15.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55196 and 55205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55229) 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, 13804 + ... + 13807.

It is an arithmetic number, because the mean of its divisors is an integer number (20709).

2⁵⁵²²² is an apocalyptic number.

55222 is a deficient number, since it is larger than the sum of its proper divisors (27614).

55222 is a wasteful number, since it uses less digits than its factorization.

55222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27613.

The product of its digits is 200, while the sum is 16.

The square root of 55222 is about 234.9936169346. The cubic root of 55222 is about 38.0806229155.

Adding to 55222 its reverse (22255), we get a palindrome (77477).

The spelling of 55222 in words is "fifty-five thousand, two hundred twenty-two".