105497209 has 2 divisors, whose sum is σ = 105497210. Its totient is φ = 105497208.

The previous prime is 105497179. The next prime is 105497213. The reversal of 105497209 is 902794501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96924025 + 8573184 = 9845^2 + 2928^2 .

It is a cyclic number.

It is not a de Polignac number, because 105497209 - 2¹¹ = 105495161 is a prime.

It is a super-2 number, since 2×105497209² = 22259322213579362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105497219) 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, 52748604 + 52748605.

It is an arithmetic number, because the mean of its divisors is an integer number (52748605).

Almost surely, 2^105497209 is an apocalyptic number.

It is an amenable number.

105497209 is a deficient number, since it is larger than the sum of its proper divisors (1).

105497209 is an equidigital number, since it uses as much as digits as its factorization.

105497209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 105497209 is about 10271.1834274343. The cubic root of 105497209 is about 472.5128859993.

The spelling of 105497209 in words is "one hundred five million, four hundred ninety-seven thousand, two hundred nine".