220105055 has 8 divisors (see below), whose sum is σ = 275609952. Its totient is φ = 168428128.

The previous prime is 220105049. The next prime is 220105057. The reversal of 220105055 is 550501022.

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 220105055 - 2²⁰ = 219056479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220105057) 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, 956864 + ... + 957093.

It is an arithmetic number, because the mean of its divisors is an integer number (34451244).

Almost surely, 2^220105055 is an apocalyptic number.

220105055 is a deficient number, since it is larger than the sum of its proper divisors (55504897).

220105055 is a wasteful number, since it uses less digits than its factorization.

220105055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913985.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 220105055 is about 14835.9379548446. The cubic root of 220105055 is about 603.7771488663. Note that the first 3 decimals are identical.

Adding to 220105055 its reverse (550501022), we get a palindrome (770606077).

The spelling of 220105055 in words is "two hundred twenty million, one hundred five thousand, fifty-five".