545504 has 12 divisors (see below), whose sum is σ = 1074024. Its totient is φ = 272736.

The previous prime is 545497. The next prime is 545521. The reversal of 545504 is 405545.

It is a super-2 number, since 2×545504² = 595149228032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545504.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8492 + ... + 8555.

It is an arithmetic number, because the mean of its divisors is an integer number (89502).

2⁵⁴⁵⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

545504 is a deficient number, since it is larger than the sum of its proper divisors (528520).

545504 is a wasteful number, since it uses less digits than its factorization.

545504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17057 (or 17049 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 545504 is about 738.5824260027. The cubic root of 545504 is about 81.7082633204.

The spelling of 545504 in words is "five hundred forty-five thousand, five hundred four".