545473 has 2 divisors, whose sum is σ = 545474. Its totient is φ = 545472.

The previous prime is 545449. The next prime is 545477. The reversal of 545473 is 374545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 2304 = 737^2 + 48^2 .

It is a cyclic number.

It is not a de Polignac number, because 545473 - 2⁹ = 544961 is a prime.

It is not a weakly prime, because it can be changed into another prime (545477) 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, 272736 + 272737.

It is an arithmetic number, because the mean of its divisors is an integer number (272737).

2⁵⁴⁵⁴⁷³ is an apocalyptic number.

It is an amenable number.

545473 is a deficient number, since it is larger than the sum of its proper divisors (1).

545473 is an equidigital number, since it uses as much as digits as its factorization.

545473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 28.

The square root of 545473 is about 738.5614395567. The cubic root of 545473 is about 81.7067155137.

The spelling of 545473 in words is "five hundred forty-five thousand, four hundred seventy-three".