222872561 has 8 divisors (see below), whose sum is σ = 225096000. Its totient is φ = 220659120.

The previous prime is 222872557. The next prime is 222872581. The reversal of 222872561 is 165278222.

222872561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222872561 - 2² = 222872557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222872521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47060 + ... + 51578.

It is an arithmetic number, because the mean of its divisors is an integer number (28137000).

Almost surely, 2^222872561 is an apocalyptic number.

It is an amenable number.

222872561 is a deficient number, since it is larger than the sum of its proper divisors (2223439).

222872561 is a wasteful number, since it uses less digits than its factorization.

222872561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999.

The product of its digits is 26880, while the sum is 35.

The square root of 222872561 is about 14928.9169399525. The cubic root of 222872561 is about 606.2971608049.

The spelling of 222872561 in words is "two hundred twenty-two million, eight hundred seventy-two thousand, five hundred sixty-one".