522221909 has 8 divisors (see below), whose sum is σ = 572650752. Its totient is φ = 472285440.

The previous prime is 522221893. The next prime is 522221927. The reversal of 522221909 is 909122225.

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

It is not a de Polignac number, because 522221909 - 2⁴ = 522221893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522221209) 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, 120869 + ... + 125114.

It is an arithmetic number, because the mean of its divisors is an integer number (71581344).

Almost surely, 2^522221909 is an apocalyptic number.

It is an amenable number.

522221909 is a deficient number, since it is larger than the sum of its proper divisors (50428843).

522221909 is a wasteful number, since it uses less digits than its factorization.

522221909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246187.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 522221909 is about 22852.1751481123. The cubic root of 522221909 is about 805.2888687195.

The spelling of 522221909 in words is "five hundred twenty-two million, two hundred twenty-one thousand, nine hundred nine".