222643455 has 16 divisors (see below), whose sum is σ = 356836704. Its totient is φ = 118540800.

The previous prime is 222643453. The next prime is 222643507. The reversal of 222643455 is 554346222.

It is a happy number.

It is not a de Polignac number, because 222643455 - 2¹ = 222643453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222643453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3334 + ... + 21363.

It is an arithmetic number, because the mean of its divisors is an integer number (22302294).

Almost surely, 2^222643455 is an apocalyptic number.

222643455 is a deficient number, since it is larger than the sum of its proper divisors (134193249).

222643455 is a wasteful number, since it uses less digits than its factorization.

222643455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25306.

The product of its digits is 57600, while the sum is 33.

The square root of 222643455 is about 14921.2417378716. The cubic root of 222643455 is about 606.0893380908.

Adding to 222643455 its reverse (554346222), we get a palindrome (776989677).

The spelling of 222643455 in words is "two hundred twenty-two million, six hundred forty-three thousand, four hundred fifty-five".