2645543 has 2 divisors, whose sum is σ = 2645544. Its totient is φ = 2645542.

The previous prime is 2645527. The next prime is 2645549. The reversal of 2645543 is 3455462.

2645543 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 2645543 - 2⁴ = 2645527 is a prime.

It is a d-powerful number, because it can be written as 2²⁰ + 6⁴ + 4 + 5² + 5⁶ + 4¹⁰ + 3¹² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645549) 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, 1322771 + 1322772.

It is an arithmetic number, because the mean of its divisors is an integer number (1322772).

2^2645543 is an apocalyptic number.

2645543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645543 is an equidigital number, since it uses as much as digits as its factorization.

2645543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 29.

The square root of 2645543 is about 1626.5125268500. The cubic root of 2645543 is about 138.3051254560.

The spelling of 2645543 in words is "two million, six hundred forty-five thousand, five hundred forty-three".