545505 has 16 divisors (see below), whose sum is σ = 895104. Its totient is φ = 283520.

The previous prime is 545497. The next prime is 545521. The reversal of 545505 is 505545.

It is not a de Polignac number, because 545505 - 2³ = 545497 is a prime.

545505 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172 + ... + 1058.

It is an arithmetic number, because the mean of its divisors is an integer number (55944).

2⁵⁴⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

545505 is a deficient number, since it is larger than the sum of its proper divisors (349599).

545505 is a wasteful number, since it uses less digits than its factorization.

545505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 545505 is about 738.5831029749. The cubic root of 545505 is about 81.7083132486.

The spelling of 545505 in words is "five hundred forty-five thousand, five hundred five".