545872 has 20 divisors (see below), whose sum is σ = 1070740. Its totient is φ = 269568.

The previous prime is 545863. The next prime is 545873. The reversal of 545872 is 278545.

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 404496 = 376^2 + 636^2 .

It is an alternating number because its digits alternate between odd and even.

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, 1588 + ... + 1900.

It is an arithmetic number, because the mean of its divisors is an integer number (53537).

2⁵⁴⁵⁸⁷² is an apocalyptic number.

It is an amenable number.

545872 is a deficient number, since it is larger than the sum of its proper divisors (524868).

545872 is a wasteful number, since it uses less digits than its factorization.

545872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 424 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 545872 is about 738.8315098857. The cubic root of 545872 is about 81.7266328049.

The spelling of 545872 in words is "five hundred forty-five thousand, eight hundred seventy-two".