545423423 has 4 divisors (see below), whose sum is σ = 545654688. Its totient is φ = 545192160.

The previous prime is 545423407. The next prime is 545423429. The reversal of 545423423 is 324324545.

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 545423423 - 2⁴ = 545423407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545423423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545423429) 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, 112058 + ... + 116823.

It is an arithmetic number, because the mean of its divisors is an integer number (136413672).

Almost surely, 2^545423423 is an apocalyptic number.

545423423 is a deficient number, since it is larger than the sum of its proper divisors (231265).

545423423 is a wasteful number, since it uses less digits than its factorization.

545423423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231264.

The product of its digits is 57600, while the sum is 32.

The square root of 545423423 is about 23354.3020233960. The cubic root of 545423423 is about 817.0424004957.

Adding to 545423423 its reverse (324324545), we get a palindrome (869747968).

The spelling of 545423423 in words is "five hundred forty-five million, four hundred twenty-three thousand, four hundred twenty-three".