545023 has 2 divisors, whose sum is σ = 545024. Its totient is φ = 545022.

The previous prime is 544979. The next prime is 545029. The reversal of 545023 is 320545.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545023 - 2¹⁷ = 413951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272511 + 272512.

It is an arithmetic number, because the mean of its divisors is an integer number (272512).

2⁵⁴⁵⁰²³ is an apocalyptic number.

545023 is a deficient number, since it is larger than the sum of its proper divisors (1).

545023 is an equidigital number, since it uses as much as digits as its factorization.

545023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 545023 is about 738.2567304129. The cubic root of 545023 is about 81.6842407457.

Adding to 545023 its reverse (320545), we get a palindrome (865568).

The spelling of 545023 in words is "five hundred forty-five thousand, twenty-three".