545775 has 24 divisors (see below), whose sum is σ = 952320. Its totient is φ = 275040.

The previous prime is 545773. The next prime is 545789. The reversal of 545775 is 577545.

It is not a de Polignac number, because 545775 - 2¹ = 545773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1234 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (39680).

2⁵⁴⁵⁷⁷⁵ is an apocalyptic number.

545775 is a deficient number, since it is larger than the sum of its proper divisors (406545).

545775 is a wasteful number, since it uses less digits than its factorization.

545775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 410 counting only the distinct ones).

The product of its digits is 24500, while the sum is 33.

The square root of 545775 is about 738.7658627739. The cubic root of 545775 is about 81.7217916499.

The spelling of 545775 in words is "five hundred forty-five thousand, seven hundred seventy-five".