222500556 has 36 divisors (see below), whose sum is σ = 595517832. Its totient is φ = 69803904.

The previous prime is 222500521. The next prime is 222500561. The reversal of 222500556 is 655005222.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable 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 in 11 ways as a sum of consecutive naturals, for example, 181170 + ... + 182393.

It is an arithmetic number, because the mean of its divisors is an integer number (16542162).

Almost surely, 2^222500556 is an apocalyptic number.

It is an amenable number.

222500556 is an abundant number, since it is smaller than the sum of its proper divisors (373017276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222500556 is a wasteful number, since it uses less digits than its factorization.

222500556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363590 (or 363585 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 222500556 is about 14916.4525273270. The cubic root of 222500556 is about 605.9596417916.

Adding to 222500556 its reverse (655005222), we get a palindrome (877505778).

The spelling of 222500556 in words is "two hundred twenty-two million, five hundred thousand, five hundred fifty-six".