1100055 has 32 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 519680.

The previous prime is 1100051. The next prime is 1100063. The reversal of 1100055 is 5500011.

It is not a de Polignac number, because 1100055 - 2² = 1100051 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1100055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9679 + ... + 9791.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2^1100055 is an apocalyptic number.

1100055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1100055 is a deficient number, since it is larger than the sum of its proper divisors (869865).

1100055 is a wasteful number, since it uses less digits than its factorization.

1100055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 1100055 is about 1048.8350680636. The cubic root of 1100055 is about 103.2297319838.

Adding to 1100055 its reverse (5500011), we get a palindrome (6600066).

The spelling of 1100055 in words is "one million, one hundred thousand, fifty-five".