545855 has 4 divisors (see below), whose sum is σ = 655032. Its totient is φ = 436680.

The previous prime is 545843. The next prime is 545863. The reversal of 545855 is 558545.

545855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 545855 - 2⁶ = 545791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54581 + ... + 54590.

It is an arithmetic number, because the mean of its divisors is an integer number (163758).

2⁵⁴⁵⁸⁵⁵ is an apocalyptic number.

545855 is a deficient number, since it is larger than the sum of its proper divisors (109177).

545855 is a wasteful number, since it uses less digits than its factorization.

545855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109176.

The product of its digits is 20000, while the sum is 32.

The square root of 545855 is about 738.8200051433. The cubic root of 545855 is about 81.7257843965.

The spelling of 545855 in words is "five hundred forty-five thousand, eight hundred fifty-five".