22355555 has 8 divisors (see below), whose sum is σ = 27227472. Its totient is φ = 17617248.

The previous prime is 22355551. The next prime is 22355587. The reversal of 22355555 is 55555322.

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

It is not a de Polignac number, because 22355555 - 2² = 22355551 is a prime.

It is a Duffinian number.

22355555 is a modest number, since divided by 5555 gives 2235 as remainder.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22355551) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33032 + ... + 33701.

It is an arithmetic number, because the mean of its divisors is an integer number (3403434).

Almost surely, 2^22355555 is an apocalyptic number.

22355555 is a deficient number, since it is larger than the sum of its proper divisors (4871917).

22355555 is an equidigital number, since it uses as much as digits as its factorization.

22355555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66805.

The product of its digits is 37500, while the sum is 32.

The square root of 22355555 is about 4728.1661349830. The cubic root of 22355555 is about 281.7053870340.

The spelling of 22355555 in words is "twenty-two million, three hundred fifty-five thousand, five hundred fifty-five".