545005 has 4 divisors (see below), whose sum is σ = 654012. Its totient is φ = 436000.

The previous prime is 544979. The next prime is 545023. The reversal of 545005 is 500545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500545 = 5 ⋅100109.

It can be written as a sum of positive squares in 2 ways, for example, as 209764 + 335241 = 458^2 + 579^2 .

It is not a de Polignac number, because 545005 - 2⁷ = 544877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54496 + ... + 54505.

It is an arithmetic number, because the mean of its divisors is an integer number (163503).

2⁵⁴⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

545005 is a deficient number, since it is larger than the sum of its proper divisors (109007).

545005 is a wasteful number, since it uses less digits than its factorization.

545005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109006.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 545005 is about 738.2445394312. The cubic root of 545005 is about 81.6833414977.

The spelling of 545005 in words is "five hundred forty-five thousand, five".