105561719 has 2 divisors, whose sum is σ = 105561720. Its totient is φ = 105561718.

The previous prime is 105561707. The next prime is 105561749. The reversal of 105561719 is 917165501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105561719 - 2²⁴ = 88784503 is a prime.

It is a super-2 number, since 2×105561719² = 22286553036469922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105561749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780859 + 52780860.

It is an arithmetic number, because the mean of its divisors is an integer number (52780860).

Almost surely, 2^105561719 is an apocalyptic number.

105561719 is a deficient number, since it is larger than the sum of its proper divisors (1).

105561719 is an equidigital number, since it uses as much as digits as its factorization.

105561719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 35.

The square root of 105561719 is about 10274.3232867182. The cubic root of 105561719 is about 472.6091779474.

The spelling of 105561719 in words is "one hundred five million, five hundred sixty-one thousand, seven hundred nineteen".