545403 has 8 divisors (see below), whose sum is σ = 752400. Its totient is φ = 351008.

The previous prime is 545387. The next prime is 545429. The reversal of 545403 is 304545.

It is a happy number.

545403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 545403 - 2⁴ = 545387 is a prime.

545403 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 545403.

It is not an unprimeable number, because it can be changed into a prime (545443) 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, 3048 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (94050).

2⁵⁴⁵⁴⁰³ is an apocalyptic number.

545403 is a deficient number, since it is larger than the sum of its proper divisors (206997).

545403 is a wasteful number, since it uses less digits than its factorization.

545403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 545403 is about 738.5140486138. The cubic root of 545403 is about 81.7032202507.

Adding to 545403 its reverse (304545), we get a palindrome (849948).

The spelling of 545403 in words is "five hundred forty-five thousand, four hundred three".