545443 has 2 divisors, whose sum is σ = 545444. Its totient is φ = 545442.

The previous prime is 545437. The next prime is 545449. The reversal of 545443 is 344545.

It is a balanced prime because it is at equal distance from previous prime (545437) and next prime (545449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545443 is a prime.

It is not a weakly prime, because it can be changed into another prime (545449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272721 + 272722.

It is an arithmetic number, because the mean of its divisors is an integer number (272722).

2⁵⁴⁵⁴⁴³ is an apocalyptic number.

545443 is a deficient number, since it is larger than the sum of its proper divisors (1).

545443 is an equidigital number, since it uses as much as digits as its factorization.

545443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 25.

The square root of 545443 is about 738.5411295250. The cubic root of 545443 is about 81.7052175805.

Adding to 545443 its reverse (344545), we get a palindrome (889988).

The spelling of 545443 in words is "five hundred forty-five thousand, four hundred forty-three".