245222 has 4 divisors (see below), whose sum is σ = 367836. Its totient is φ = 122610.

The previous prime is 245209. The next prime is 245251. The reversal of 245222 is 222542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222542 = 2 ⋅111271.

It is a self number, because there is not a number n which added to its sum of digits gives 245222.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245222.

It is an unprimeable number.

245222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61304 + ... + 61307.

It is an arithmetic number, because the mean of its divisors is an integer number (91959).

2²⁴⁵²²² is an apocalyptic number.

245222 is a deficient number, since it is larger than the sum of its proper divisors (122614).

245222 is a wasteful number, since it uses less digits than its factorization.

245222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122613.

The product of its digits is 320, while the sum is 17.

The square root of 245222 is about 495.1989499181. The cubic root of 245222 is about 62.5921414259.

Adding to 245222 its product of digits (320), we get a palindrome (245542).

Adding to 245222 its reverse (222542), we get a palindrome (467764).

The spelling of 245222 in words is "two hundred forty-five thousand, two hundred twenty-two".