222455 has 4 divisors (see below), whose sum is σ = 266952. Its totient is φ = 177960.

The previous prime is 222437. The next prime is 222461. The reversal of 222455 is 554222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222455 - 2⁸ = 222199 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22241 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (66738).

2²²²⁴⁵⁵ is an apocalyptic number.

222455 is a deficient number, since it is larger than the sum of its proper divisors (44497).

222455 is an equidigital number, since it uses as much as digits as its factorization.

222455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44496.

The product of its digits is 800, while the sum is 20.

The square root of 222455 is about 471.6513542862. The cubic root of 222455 is about 60.5918283121.

Adding to 222455 its reverse (554222), we get a palindrome (776677).

The spelling of 222455 in words is "two hundred twenty-two thousand, four hundred fifty-five".