545843 has 2 divisors, whose sum is σ = 545844. Its totient is φ = 545842.

The previous prime is 545827. The next prime is 545863. The reversal of 545843 is 348545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545843 - 2⁴ = 545827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (545863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272921 + 272922.

It is an arithmetic number, because the mean of its divisors is an integer number (272922).

2⁵⁴⁵⁸⁴³ is an apocalyptic number.

545843 is a deficient number, since it is larger than the sum of its proper divisors (1).

545843 is an equidigital number, since it uses as much as digits as its factorization.

545843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 29.

The square root of 545843 is about 738.8118840409. The cubic root of 545843 is about 81.7251855094.

The spelling of 545843 in words is "five hundred forty-five thousand, eight hundred forty-three".