545730 has 16 divisors (see below), whose sum is σ = 1309824. Its totient is φ = 145520.

The previous prime is 545723. The next prime is 545731. The reversal of 545730 is 37545.

It is a self number, because there is not a number n which added to its sum of digits gives 545730.

It is not an unprimeable number, because it can be changed into a prime (545731) by changing a digit.

545730 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, 9066 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (81864).

2⁵⁴⁵⁷³⁰ is an apocalyptic number.

545730 is an abundant number, since it is smaller than the sum of its proper divisors (764094).

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

545730 is a wasteful number, since it uses less digits than its factorization.

545730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18201.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 545730 is about 738.7354059472. The cubic root of 545730 is about 81.7195455584.

It can be divided in two parts, 545 and 730, that added together give a triangular number (1275 = T₅₀).

The spelling of 545730 in words is "five hundred forty-five thousand, seven hundred thirty".