105608081 has 2 divisors, whose sum is σ = 105608082. Its totient is φ = 105608080.

The previous prime is 105608077. The next prime is 105608119. The reversal of 105608081 is 180806501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92467456 + 13140625 = 9616^2 + 3625^2 .

It is a cyclic number.

It is not a de Polignac number, because 105608081 - 2² = 105608077 is a prime.

It is a super-2 number, since 2×105608081² = 22306133545005122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (105608011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52804040 + 52804041.

It is an arithmetic number, because the mean of its divisors is an integer number (52804041).

Almost surely, 2^105608081 is an apocalyptic number.

It is an amenable number.

105608081 is a deficient number, since it is larger than the sum of its proper divisors (1).

105608081 is an equidigital number, since it uses as much as digits as its factorization.

105608081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 105608081 is about 10276.5792460332. The cubic root of 105608081 is about 472.6783567493.

The spelling of 105608081 in words is "one hundred five million, six hundred eight thousand, eighty-one".