2144081 has 2 divisors, whose sum is σ = 2144082. Its totient is φ = 2144080.

The previous prime is 2144063. The next prime is 2144117. The reversal of 2144081 is 1804412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 67600 = 1441^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144081 - 2¹⁸ = 1881937 is a prime.

It is a super-2 number, since 2×2144081² = 9194166669122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2144011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072040 + 1072041.

It is an arithmetic number, because the mean of its divisors is an integer number (1072041).

2^2144081 is an apocalyptic number.

It is an amenable number.

2144081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144081 is an equidigital number, since it uses as much as digits as its factorization.

2144081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2144081 is about 1464.2680765488. The cubic root of 2144081 is about 128.9477383799.

Adding to 2144081 its reverse (1804412), we get a palindrome (3948493).

The spelling of 2144081 in words is "two million, one hundred forty-four thousand, eighty-one".