105456805 has 4 divisors (see below), whose sum is σ = 126548172. Its totient is φ = 84365440.

The previous prime is 105456787. The next prime is 105456809. The reversal of 105456805 is 508654501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508654501 = 17 ⋅29920853.

It can be written as a sum of positive squares in 2 ways, for example, as 35450116 + 70006689 = 5954^2 + 8367^2 .

It is not a de Polignac number, because 105456805 - 2⁵ = 105456773 is a prime.

It is a super-2 number, since 2×105456805² = 22242275441616050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105456809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10545676 + ... + 10545685.

It is an arithmetic number, because the mean of its divisors is an integer number (31637043).

Almost surely, 2^105456805 is an apocalyptic number.

It is an amenable number.

105456805 is a deficient number, since it is larger than the sum of its proper divisors (21091367).

105456805 is an equidigital number, since it uses as much as digits as its factorization.

105456805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21091366.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 105456805 is about 10269.2163771147. The cubic root of 105456805 is about 472.4525562882.

The spelling of 105456805 in words is "one hundred five million, four hundred fifty-six thousand, eight hundred five".