8161105 has 8 divisors (see below), whose sum is σ = 10369512. Its totient is φ = 6144768.

The previous prime is 8161081. The next prime is 8161121. The reversal of 8161105 is 5011618.

It can be written as a sum of positive squares in 4 ways, for example, as 3598609 + 4562496 = 1897^2 + 2136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8161105 - 2⁵ = 8161073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47922 + ... + 48091.

It is an arithmetic number, because the mean of its divisors is an integer number (1296189).

Almost surely, 2^8161105 is an apocalyptic number.

8161105 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8161105 is a deficient number, since it is larger than the sum of its proper divisors (2208407).

8161105 is a wasteful number, since it uses less digits than its factorization.

8161105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96035.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 8161105 is about 2856.7647785563. The cubic root of 8161105 is about 201.3336290680. Note that the first 3 decimals are identical.

The spelling of 8161105 in words is "eight million, one hundred sixty-one thousand, one hundred five".