22255566 has 16 divisors (see below), whose sum is σ = 44575104. Its totient is φ = 7407864.

The previous prime is 22255543. The next prime is 22255577. The reversal of 22255566 is 66555222.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685 + ... + 7191.

It is an arithmetic number, because the mean of its divisors is an integer number (2785944).

Almost surely, 2^22255566 is an apocalyptic number.

22255566 is an abundant number, since it is smaller than the sum of its proper divisors (22319538).

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

22255566 is a wasteful number, since it uses less digits than its factorization.

22255566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335.

The product of its digits is 36000, while the sum is 33.

The square root of 22255566 is about 4717.5805239550. The cubic root of 22255566 is about 281.2847676525.

The spelling of 22255566 in words is "twenty-two million, two hundred fifty-five thousand, five hundred sixty-six".