545604 has 24 divisors (see below), whose sum is σ = 1340640. Its totient is φ = 172224.

The previous prime is 545599. The next prime is 545609. The reversal of 545604 is 406545.

It is an interprime number because it is at equal distance from previous prime (545599) and next prime (545609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969 + ... + 1424.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2⁵⁴⁵⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

545604 is an abundant number, since it is smaller than the sum of its proper divisors (795036).

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

545604 is a wasteful number, since it uses less digits than its factorization.

545604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 545604 is about 738.6501201516. The cubic root of 545604 is about 81.7132558454.

The spelling of 545604 in words is "five hundred forty-five thousand, six hundred four".