105500055 has 32 divisors (see below), whose sum is σ = 172730880. Its totient is φ = 54972800.

The previous prime is 105500053. The next prime is 105500063. The reversal of 105500055 is 550005501.

It is not a de Polignac number, because 105500055 - 2¹ = 105500053 is a prime.

It is a super-2 number, since 2×105500055² = 22260523210006050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105500053) 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, 125326 + ... + 126164.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^105500055 is an apocalyptic number.

105500055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105500055 is a deficient number, since it is larger than the sum of its proper divisors (67230825).

105500055 is a wasteful number, since it uses less digits than its factorization.

105500055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 105500055 is about 10271.3219694448. The cubic root of 105500055 is about 472.5171349571.

Adding to 105500055 its reverse (550005501), we get a palindrome (655505556).

The spelling of 105500055 in words is "one hundred five million, five hundred thousand, fifty-five".