545804 has 24 divisors (see below), whose sum is σ = 1108128. Its totient is φ = 230400.

The previous prime is 545791. The next prime is 545827. The reversal of 545804 is 408545.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545804.

It is an unprimeable number.

545804 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, 2732 + ... + 2924.

It is an arithmetic number, because the mean of its divisors is an integer number (46172).

2⁵⁴⁵⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

545804 is an abundant number, since it is smaller than the sum of its proper divisors (562324).

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

545804 is a wasteful number, since it uses less digits than its factorization.

545804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 545804 is about 738.7854898413. The cubic root of 545804 is about 81.7232390656.

The spelling of 545804 in words is "five hundred forty-five thousand, eight hundred four".