2105567 has 2 divisors, whose sum is σ = 2105568. Its totient is φ = 2105566.

The previous prime is 2105557. The next prime is 2105591. The reversal of 2105567 is 7655012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105567 - 2⁶ = 2105503 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052783 + 1052784.

It is an arithmetic number, because the mean of its divisors is an integer number (1052784).

2^2105567 is an apocalyptic number.

2105567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105567 is an equidigital number, since it uses as much as digits as its factorization.

2105567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2105567 is about 1451.0572008022. The cubic root of 2105567 is about 128.1709751327.

The spelling of 2105567 in words is "two million, one hundred five thousand, five hundred sixty-seven".