2108081 has 2 divisors, whose sum is σ = 2108082. Its totient is φ = 2108080.

The previous prime is 2108077. The next prime is 2108087. The reversal of 2108081 is 1808012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 312481 = 1340^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108081 - 2² = 2108077 is a prime.

It is a super-2 number, since 2×2108081² = 8888011005122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2108087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054040 + 1054041.

It is an arithmetic number, because the mean of its divisors is an integer number (1054041).

2^2108081 is an apocalyptic number.

It is an amenable number.

2108081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108081 is an equidigital number, since it uses as much as digits as its factorization.

2108081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 2108081 is about 1451.9232073357. The cubic root of 2108081 is about 128.2219659386.

The spelling of 2108081 in words is "two million, one hundred eight thousand, eighty-one".