105505249 has 2 divisors, whose sum is σ = 105505250. Its totient is φ = 105505248.

The previous prime is 105505237. The next prime is 105505289. The reversal of 105505249 is 942505501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103388224 + 2117025 = 10168^2 + 1455^2 .

It is a cyclic number.

It is not a de Polignac number, because 105505249 - 2¹¹ = 105503201 is a prime.

It is a super-2 number, since 2×105505249² = 22262715133104002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105505249.

It is not a weakly prime, because it can be changed into another prime (105505229) 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 as a sum of consecutive naturals, namely, 52752624 + 52752625.

It is an arithmetic number, because the mean of its divisors is an integer number (52752625).

Almost surely, 2^105505249 is an apocalyptic number.

It is an amenable number.

105505249 is a deficient number, since it is larger than the sum of its proper divisors (1).

105505249 is an equidigital number, since it uses as much as digits as its factorization.

105505249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 105505249 is about 10271.5748062310. The cubic root of 105505249 is about 472.5248891828.

The spelling of 105505249 in words is "one hundred five million, five hundred five thousand, two hundred forty-nine".