545140423 has 4 divisors (see below), whose sum is σ = 546659280. Its totient is φ = 543621568.

The previous prime is 545140417. The next prime is 545140429. The reversal of 545140423 is 324041545.

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

It is an interprime number because it is at equal distance from previous prime (545140417) and next prime (545140429).

It is a cyclic number.

It is not a de Polignac number, because 545140423 - 2²⁹ = 8269511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545140391 and 545140400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545140429) 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, 758890 + ... + 759607.

It is an arithmetic number, because the mean of its divisors is an integer number (136664820).

Almost surely, 2^545140423 is an apocalyptic number.

545140423 is a deficient number, since it is larger than the sum of its proper divisors (1518857).

545140423 is a wasteful number, since it uses less digits than its factorization.

545140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518856.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 545140423 is about 23348.2423963775. The cubic root of 545140423 is about 816.9010650414.

Adding to 545140423 its reverse (324041545), we get a palindrome (869181968).

The spelling of 545140423 in words is "five hundred forty-five million, one hundred forty thousand, four hundred twenty-three".