2140591 has 2 divisors, whose sum is σ = 2140592. Its totient is φ = 2140590.

The previous prime is 2140573. The next prime is 2140601. The reversal of 2140591 is 1950412.

2140591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070295 + 1070296.

It is an arithmetic number, because the mean of its divisors is an integer number (1070296).

2^2140591 is an apocalyptic number.

2140591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140591 is an equidigital number, since it uses as much as digits as its factorization.

2140591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 2140591 is about 1463.0758695297. The cubic root of 2140591 is about 128.8777360489.

It can be divided in two parts, 2 and 140591, that multiplied together give a palindrome (281182).

The spelling of 2140591 in words is "two million, one hundred forty thousand, five hundred ninety-one".