16105081 has 2 divisors, whose sum is σ = 16105082. Its totient is φ = 16105080.

The previous prime is 16105073. The next prime is 16105093. The reversal of 16105081 is 18050161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 2005056 = 3755^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 16105081 - 2³ = 16105073 is a prime.

It is a super-2 number, since 2×16105081² = 518747268033122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16105031) 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, 8052540 + 8052541.

It is an arithmetic number, because the mean of its divisors is an integer number (8052541).

Almost surely, 2^16105081 is an apocalyptic number.

It is an amenable number.

16105081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105081 is an equidigital number, since it uses as much as digits as its factorization.

16105081 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16105081 is about 4013.1136290915. The cubic root of 16105081 is about 252.5346474038.

The spelling of 16105081 in words is "sixteen million, one hundred five thousand, eighty-one".