2149591 has 2 divisors, whose sum is σ = 2149592. Its totient is φ = 2149590.

The previous prime is 2149573. The next prime is 2149607. The reversal of 2149591 is 1959412.

2149591 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 not a de Polignac number, because 2149591 - 2⁵ = 2149559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149501) 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, 1074795 + 1074796.

It is an arithmetic number, because the mean of its divisors is an integer number (1074796).

2^2149591 is an apocalyptic number.

2149591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149591 is an equidigital number, since it uses as much as digits as its factorization.

2149591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 2149591 is about 1466.1483553856. The cubic root of 2149591 is about 129.0581033450.

The spelling of 2149591 in words is "two million, one hundred forty-nine thousand, five hundred ninety-one".