545879 has 4 divisors (see below), whose sum is σ = 563520. Its totient is φ = 528240.

The previous prime is 545873. The next prime is 545893. The reversal of 545879 is 978545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978545 = 5 ⋅195709.

It is not a de Polignac number, because 545879 - 2⁴ = 545863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8774 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (140880).

2⁵⁴⁵⁸⁷⁹ is an apocalyptic number.

545879 is a deficient number, since it is larger than the sum of its proper divisors (17641).

545879 is a wasteful number, since it uses less digits than its factorization.

545879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640.

The product of its digits is 50400, while the sum is 38.

The square root of 545879 is about 738.8362470805. The cubic root of 545879 is about 81.7269821445.

The spelling of 545879 in words is "five hundred forty-five thousand, eight hundred seventy-nine".