545040223 has 16 divisors (see below), whose sum is σ = 699987456. Its totient is φ = 412489440.

The previous prime is 545040193. The next prime is 545040227. The reversal of 545040223 is 322040545.

It is a cyclic number.

It is not a de Polignac number, because 545040223 - 2⁵ = 545040191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545040227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128113 + ... + 132298.

It is an arithmetic number, because the mean of its divisors is an integer number (43749216).

Almost surely, 2^545040223 is an apocalyptic number.

545040223 is a deficient number, since it is larger than the sum of its proper divisors (154947233).

545040223 is a wasteful number, since it uses less digits than its factorization.

545040223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260454.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 545040223 is about 23346.0965259720. The cubic root of 545040223 is about 816.8510115758.

Adding to 545040223 its reverse (322040545), we get a palindrome (867080768).

The spelling of 545040223 in words is "five hundred forty-five million, forty thousand, two hundred twenty-three".