545889 has 16 divisors (see below), whose sum is σ = 783680. Its totient is φ = 336960.

The previous prime is 545873. The next prime is 545893. The reversal of 545889 is 988545.

It is not a de Polignac number, because 545889 - 2⁴ = 545873 is a prime.

It is a Duffinian number.

545889 is an undulating number in base 13.

Its product of digits (57600) is a multiple of the sum of its prime divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545899) 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 15 ways as a sum of consecutive naturals, for example, 3399 + ... + 3555.

It is an arithmetic number, because the mean of its divisors is an integer number (48980).

2⁵⁴⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

545889 is a deficient number, since it is larger than the sum of its proper divisors (237791).

545889 is a wasteful number, since it uses less digits than its factorization.

545889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its digits is 57600, while the sum is 39.

The square root of 545889 is about 738.8430144489. The cubic root of 545889 is about 81.7274811957.

The spelling of 545889 in words is "five hundred forty-five thousand, eight hundred eighty-nine".