222245 has 4 divisors (see below), whose sum is σ = 266700.
Its totient is φ = 177792.
The previous prime is 222199. The next prime is 222247. The reversal of 222245 is 542222.
Adding to 222245 its reverse (542222), we get a palindrome (764467).
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 139876 + 82369 = 374^2 + 287^2
It is a cyclic number.
It is not a de Polignac number, because 222245 - 28 = 221989 is a prime.
It is a magnanimous number.
It is a plaindrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (222247) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22220 + ... + 22229.
It is an arithmetic number, because the mean of its divisors is an integer number (66675).
2222245 is an apocalyptic number.
It is an amenable number.
222245 is a deficient number, since it is larger than the sum of its proper divisors (44455).
222245 is an equidigital number, since it uses as much as digits as its factorization.
222245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 44454.
The product of its digits is 320, while the sum is 17.
The square root of 222245 is about 471.4286796537.
The cubic root of 222245 is about 60.5727558555.
The spelling of 222245 in words is "two hundred twenty-two thousand, two hundred forty-five".