545273 has 4 divisors (see below), whose sum is σ = 547428. Its totient is φ = 543120.

The previous prime is 545267. The next prime is 545291. The reversal of 545273 is 372545.

545273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372545 = 5 ⋅74509.

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 327184 = 467^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 545273 - 2⁴ = 545257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (136857).

2⁵⁴⁵²⁷³ is an apocalyptic number.

It is an amenable number.

545273 is a deficient number, since it is larger than the sum of its proper divisors (2155).

545273 is a wasteful number, since it uses less digits than its factorization.

545273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its digits is 4200, while the sum is 26.

The square root of 545273 is about 738.4260287937. The cubic root of 545273 is about 81.6967282545.

It can be divided in two parts, 545 and 273, that multiplied together give a triangular number (148785 = T₅₄₅).

The spelling of 545273 in words is "five hundred forty-five thousand, two hundred seventy-three".