545508 has 24 divisors (see below), whose sum is σ = 1414560. Its totient is φ = 181800.

The previous prime is 545497. The next prime is 545521. The reversal of 545508 is 805545.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545508.

It is an unprimeable number.

545508 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (58940).

2⁵⁴⁵⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

545508 is an abundant number, since it is smaller than the sum of its proper divisors (869052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545508 is a wasteful number, since it uses less digits than its factorization.

545508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 545508 is about 738.5851338878. The cubic root of 545508 is about 81.7084630331.

The spelling of 545508 in words is "five hundred forty-five thousand, five hundred eight".