545730403 has 4 divisors (see below), whose sum is σ = 548885088. Its totient is φ = 542575720.

The previous prime is 545730319. The next prime is 545730433. The reversal of 545730403 is 304037545.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545730403 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545730433) 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, 1577083 + ... + 1577428.

It is an arithmetic number, because the mean of its divisors is an integer number (137221272).

Almost surely, 2^545730403 is an apocalyptic number.

545730403 is a deficient number, since it is larger than the sum of its proper divisors (3154685).

545730403 is a wasteful number, since it uses less digits than its factorization.

545730403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154684.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 545730403 is about 23360.8733355583. The cubic root of 545730403 is about 817.1956567396.

Adding to 545730403 its reverse (304037545), we get a palindrome (849767948).

The spelling of 545730403 in words is "five hundred forty-five million, seven hundred thirty thousand, four hundred three".