105551305 has 4 divisors (see below), whose sum is σ = 126661572. Its totient is φ = 84441040.

The previous prime is 105551297. The next prime is 105551309. The reversal of 105551305 is 503155501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503155501 = 307 ⋅1638943.

It can be written as a sum of positive squares in 2 ways, for example, as 67371264 + 38180041 = 8208^2 + 6179^2 .

It is not a de Polignac number, because 105551305 - 2³ = 105551297 is a prime.

It is a super-2 number, since 2×105551305² = 22282155974406050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105551305.

It is not an unprimeable number, because it can be changed into a prime (105551309) 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 3 ways as a sum of consecutive naturals, for example, 10555126 + ... + 10555135.

It is an arithmetic number, because the mean of its divisors is an integer number (31665393).

Almost surely, 2^105551305 is an apocalyptic number.

It is an amenable number.

105551305 is a deficient number, since it is larger than the sum of its proper divisors (21110267).

105551305 is an equidigital number, since it uses as much as digits as its factorization.

105551305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21110266.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 105551305 is about 10273.8164768503. The cubic root of 105551305 is about 472.5936359691.

The spelling of 105551305 in words is "one hundred five million, five hundred fifty-one thousand, three hundred five".