545808 has 40 divisors (see below), whose sum is σ = 1437408. Its totient is φ = 178432.

The previous prime is 545791. The next prime is 545827. The reversal of 545808 is 808545.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545808.

It is an unprimeable number.

545808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3916 + ... + 4052.

2⁵⁴⁵⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718704).

545808 is an abundant number, since it is smaller than the sum of its proper divisors (891600).

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

545808 is a wasteful number, since it uses less digits than its factorization.

545808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 545808 is about 738.7881969821. The cubic root of 545808 is about 81.7234387051.

The spelling of 545808 in words is "five hundred forty-five thousand, eight hundred eight".