545983 has 8 divisors (see below), whose sum is σ = 575280. Its totient is φ = 517440.

The previous prime is 545959. The next prime is 546001. The reversal of 545983 is 389545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545983 is a prime.

It is a Duffinian number.

545983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (71910).

2⁵⁴⁵⁹⁸³ is an apocalyptic number.

545983 is a deficient number, since it is larger than the sum of its proper divisors (29297).

545983 is a wasteful number, since it uses less digits than its factorization.

545983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its digits is 21600, while the sum is 34.

The square root of 545983 is about 738.9066246827. The cubic root of 545983 is about 81.7321719798.

The spelling of 545983 in words is "five hundred forty-five thousand, nine hundred eighty-three".