545271 has 4 divisors (see below), whose sum is σ = 727032. Its totient is φ = 363512.

The previous prime is 545267. The next prime is 545291. The reversal of 545271 is 172545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545271 - 2² = 545267 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90876 + ... + 90881.

It is an arithmetic number, because the mean of its divisors is an integer number (181758).

2⁵⁴⁵²⁷¹ is an apocalyptic number.

545271 is a deficient number, since it is larger than the sum of its proper divisors (181761).

545271 is a wasteful number, since it uses less digits than its factorization.

545271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181760.

The product of its digits is 1400, while the sum is 24.

The square root of 545271 is about 738.4246745606. The cubic root of 545271 is about 81.6966283696.

The spelling of 545271 in words is "five hundred forty-five thousand, two hundred seventy-one".