545423 has 8 divisors (see below), whose sum is σ = 571536. Its totient is φ = 520000.

The previous prime is 545387. The next prime is 545429. The reversal of 545423 is 324545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545423 - 2¹⁰ = 544399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2⁵⁴⁵⁴²³ is an apocalyptic number.

545423 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

545423 is a deficient number, since it is larger than the sum of its proper divisors (26113).

545423 is a wasteful number, since it uses less digits than its factorization.

545423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345.

The product of its digits is 2400, while the sum is 23.

The square root of 545423 is about 738.5275891935. The cubic root of 545423 is about 81.7042189278.

Adding to 545423 its reverse (324545), we get a palindrome (869968).

It can be divided in two parts, 54542 and 3, that added together give a palindrome (54545).

The spelling of 545423 in words is "five hundred forty-five thousand, four hundred twenty-three".