545603 has 4 divisors (see below), whose sum is σ = 547560. Its totient is φ = 543648.

The previous prime is 545599. The next prime is 545609. The reversal of 545603 is 306545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545603 - 2² = 545599 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (545609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (136890).

2⁵⁴⁵⁶⁰³ is an apocalyptic number.

545603 is a deficient number, since it is larger than the sum of its proper divisors (1957).

545603 is a wasteful number, since it uses less digits than its factorization.

545603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 545603 is about 738.6494432408. The cubic root of 545603 is about 81.7132059232.

The spelling of 545603 in words is "five hundred forty-five thousand, six hundred three".