545744 has 20 divisors (see below), whose sum is σ = 1104096. Its totient is φ = 260832.

The previous prime is 545731. The next prime is 545747. The reversal of 545744 is 447545.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545744.

It is not an unprimeable number, because it can be changed into a prime (545747) by changing a digit.

545744 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374 + ... + 1109.

2⁵⁴⁵⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

545744 is an abundant number, since it is smaller than the sum of its proper divisors (558352).

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

545744 is a wasteful number, since it uses less digits than its factorization.

545744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1508 counting only the distinct ones).

The product of its digits is 11200, while the sum is 29.

The square root of 545744 is about 738.7448815390. The cubic root of 545744 is about 81.7202443557.

The spelling of 545744 in words is "five hundred forty-five thousand, seven hundred forty-four".