2104591 has 2 divisors, whose sum is σ = 2104592. Its totient is φ = 2104590.

The previous prime is 2104567. The next prime is 2104601. The reversal of 2104591 is 1954012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2104591 - 2¹³ = 2096399 is a prime.

It is a Chen prime.

2104591 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052295 + 1052296.

It is an arithmetic number, because the mean of its divisors is an integer number (1052296).

2^2104591 is an apocalyptic number.

2104591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104591 is an equidigital number, since it uses as much as digits as its factorization.

2104591 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 2104591 is about 1450.7208552992. The cubic root of 2104591 is about 128.1511682422.

The spelling of 2104591 in words is "two million, one hundred four thousand, five hundred ninety-one".