545071 has 4 divisors (see below), whose sum is σ = 577152. Its totient is φ = 512992.

The previous prime is 545063. The next prime is 545087. The reversal of 545071 is 170545.

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

It is not a de Polignac number, because 545071 - 2³ = 545063 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545371) 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, 16015 + ... + 16048.

It is an arithmetic number, because the mean of its divisors is an integer number (144288).

2⁵⁴⁵⁰⁷¹ is an apocalyptic number.

545071 is a deficient number, since it is larger than the sum of its proper divisors (32081).

545071 is a wasteful number, since it uses less digits than its factorization.

545071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32080.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 545071 is about 738.2892387134. The cubic root of 545071 is about 81.6866386435.

The spelling of 545071 in words is "five hundred forty-five thousand, seventy-one".