222516655 has 16 divisors (see below), whose sum is σ = 283076640. Its totient is φ = 167334912.

The previous prime is 222516653. The next prime is 222516661. The reversal of 222516655 is 556615222.

It is a cyclic number.

It is not a de Polignac number, because 222516655 - 2¹ = 222516653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222516655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222516653) 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, 135952 + ... + 137578.

It is an arithmetic number, because the mean of its divisors is an integer number (17692290).

Almost surely, 2^222516655 is an apocalyptic number.

222516655 is a deficient number, since it is larger than the sum of its proper divisors (60559985).

222516655 is a wasteful number, since it uses less digits than its factorization.

222516655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258.

The product of its digits is 36000, while the sum is 34.

The square root of 222516655 is about 14916.9921565978. The cubic root of 222516655 is about 605.9742561506.

The spelling of 222516655 in words is "two hundred twenty-two million, five hundred sixteen thousand, six hundred fifty-five".