545740 has 24 divisors (see below), whose sum is σ = 1234800. Its totient is φ = 201408.

The previous prime is 545731. The next prime is 545747. The reversal of 545740 is 47545.

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

545740 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 7 ways as a sum of consecutive naturals, for example, 790 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (51450).

2⁵⁴⁵⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

545740 is an abundant number, since it is smaller than the sum of its proper divisors (689060).

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

545740 is a wasteful number, since it uses less digits than its factorization.

545740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 545740 is about 738.7421742394. The cubic root of 545740 is about 81.7200447005.

The spelling of 545740 in words is "five hundred forty-five thousand, seven hundred forty".