222406155 has 40 divisors (see below), whose sum is σ = 422148672. Its totient is φ = 111635712.

The previous prime is 222406147. The next prime is 222406193. The reversal of 222406155 is 551604222.

222406155 is a `hidden beast` number, since 2 + 2 + 2 + 40 + 615 + 5 = 666.

It is not a de Polignac number, because 222406155 - 2³ = 222406147 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9267 + ... + 23036.

Almost surely, 2^222406155 is an apocalyptic number.

222406155 is a deficient number, since it is larger than the sum of its proper divisors (199742517).

222406155 is a wasteful number, since it uses less digits than its factorization.

222406155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32337 (or 32328 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 222406155 is about 14913.2878668656. The cubic root of 222406155 is about 605.8739322110.

The spelling of 222406155 in words is "two hundred twenty-two million, four hundred six thousand, one hundred fifty-five".