545434423 has 4 divisors (see below), whose sum is σ = 545512480. Its totient is φ = 545356368.

The previous prime is 545434411. The next prime is 545434493. The reversal of 545434423 is 324434545.

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

It is a cyclic number.

It is not a de Polignac number, because 545434423 - 2²¹ = 543337271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545434493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27390 + ... + 42907.

It is an arithmetic number, because the mean of its divisors is an integer number (136378120).

Almost surely, 2^545434423 is an apocalyptic number.

545434423 is a deficient number, since it is larger than the sum of its proper divisors (78057).

545434423 is an equidigital number, since it uses as much as digits as its factorization.

545434423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78056.

The product of its digits is 115200, while the sum is 34.

The square root of 545434423 is about 23354.5375248580. The cubic root of 545434423 is about 817.0478931128.

Adding to 545434423 its reverse (324434545), we get a palindrome (869868968).

The spelling of 545434423 in words is "five hundred forty-five million, four hundred thirty-four thousand, four hundred twenty-three".