545944 has 16 divisors (see below), whose sum is σ = 1170000. Its totient is φ = 233952.

The previous prime is 545939. The next prime is 545947. The reversal of 545944 is 449545.

It is a super-2 number, since 2×545944² = 596109702272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545947) by changing a digit.

545944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 4819 + ... + 4930.

It is an arithmetic number, because the mean of its divisors is an integer number (73125).

2⁵⁴⁵⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

545944 is an abundant number, since it is smaller than the sum of its proper divisors (624056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545944 is a wasteful number, since it uses less digits than its factorization.

545944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9762 (or 9758 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 545944 is about 738.8802338674. The cubic root of 545944 is about 81.7302258688.

The spelling of 545944 in words is "five hundred forty-five thousand, nine hundred forty-four".