545873 has 2 divisors, whose sum is σ = 545874. Its totient is φ = 545872.

The previous prime is 545863. The next prime is 545893. The reversal of 545873 is 378545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 2704 = 737^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 545873 - 2⁸ = 545617 is a prime.

It is not a weakly prime, because it can be changed into another prime (545843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272936 + 272937.

It is an arithmetic number, because the mean of its divisors is an integer number (272937).

2⁵⁴⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

545873 is a deficient number, since it is larger than the sum of its proper divisors (1).

545873 is an equidigital number, since it uses as much as digits as its factorization.

545873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 545873 is about 738.8321866297. The cubic root of 545873 is about 81.7266827108.

The spelling of 545873 in words is "five hundred forty-five thousand, eight hundred seventy-three".