545985 has 24 divisors (see below), whose sum is σ = 1033344. Its totient is φ = 264480.

The previous prime is 545959. The next prime is 546001. The reversal of 545985 is 589545.

It is a happy number.

It is not a de Polignac number, because 545985 - 2⁹ = 545473 is a prime.

Its product of digits (36000) is a multiple of the sum of its prime factors (1125).

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 in 23 ways as a sum of consecutive naturals, for example, 57 + ... + 1046.

It is an arithmetic number, because the mean of its divisors is an integer number (43056).

2⁵⁴⁵⁹⁸⁵ is an apocalyptic number.

545985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545985 is a deficient number, since it is larger than the sum of its proper divisors (487359).

545985 is a wasteful number, since it uses less digits than its factorization.

545985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1122 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 545985 is about 738.9079780324. The cubic root of 545985 is about 81.7322717779.

The spelling of 545985 in words is "five hundred forty-five thousand, nine hundred eighty-five".