545023223 has 4 divisors (see below), whose sum is σ = 545069928. Its totient is φ = 544976520.

The previous prime is 545023201. The next prime is 545023229. The reversal of 545023223 is 322320545.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322320545 = 5 ⋅64464109.

It is a cyclic number.

It is not a de Polignac number, because 545023223 - 2⁶ = 545023159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545023192 and 545023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545023229) 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, 10865 + ... + 34757.

It is an arithmetic number, because the mean of its divisors is an integer number (136267482).

Almost surely, 2^545023223 is an apocalyptic number.

545023223 is a deficient number, since it is larger than the sum of its proper divisors (46705).

545023223 is a wasteful number, since it uses less digits than its factorization.

545023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46704.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 545023223 is about 23345.7324365718. The cubic root of 545023223 is about 816.8425188622.

Adding to 545023223 its reverse (322320545), we get a palindrome (867343768).

The spelling of 545023223 in words is "five hundred forty-five million, twenty-three thousand, two hundred twenty-three".