545745 has 8 divisors (see below), whose sum is σ = 873216. Its totient is φ = 291056.

The previous prime is 545731. The next prime is 545747. The reversal of 545745 is 547545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545745 - 2⁷ = 545617 is a prime.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18177 + ... + 18206.

It is an arithmetic number, because the mean of its divisors is an integer number (109152).

2⁵⁴⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

545745 is a deficient number, since it is larger than the sum of its proper divisors (327471).

545745 is a wasteful number, since it uses less digits than its factorization.

545745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36391.

The product of its digits is 14000, while the sum is 30.

The square root of 545745 is about 738.7455583623. The cubic root of 545745 is about 81.7202942693.

The spelling of 545745 in words is "five hundred forty-five thousand, seven hundred forty-five".