Search a number
-
+
22255 = 54451
BaseRepresentation
bin101011011101111
31010112021
411123233
51203010
6251011
7121612
oct53357
933467
1022255
11157a2
1210a67
13a18c
148179
1568da
hex56ef

22255 has 4 divisors (see below), whose sum is σ = 26712. Its totient is φ = 17800.

The previous prime is 22247. The next prime is 22259. The reversal of 22255 is 55222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55222 = 227611.

It is not a de Polignac number, because 22255 - 23 = 22247 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9, base 10 and base 16.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22259) 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 in 3 ways as a sum of consecutive naturals, for example, 2221 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (6678).

222255 is an apocalyptic number.

22255 is a deficient number, since it is larger than the sum of its proper divisors (4457).

22255 is an equidigital number, since it uses as much as digits as its factorization.

22255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456.

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

The square root of 22255 is about 149.1810979984. The cubic root of 22255 is about 28.1282383103.

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

The spelling of 22255 in words is "twenty-two thousand, two hundred fifty-five".

Divisors: 1 5 4451 22255