2045543 has 2 divisors, whose sum is σ = 2045544. Its totient is φ = 2045542.

The previous prime is 2045539. The next prime is 2045557. The reversal of 2045543 is 3455402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2045543 - 2² = 2045539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022771 + 1022772.

It is an arithmetic number, because the mean of its divisors is an integer number (1022772).

2^2045543 is an apocalyptic number.

2045543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045543 is an equidigital number, since it uses as much as digits as its factorization.

2045543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2045543 is about 1430.2248075041. The cubic root of 2045543 is about 126.9412794030.

The spelling of 2045543 in words is "two million, forty-five thousand, five hundred forty-three".