544780543 has 4 divisors (see below), whose sum is σ = 551344248. Its totient is φ = 538216840.

The previous prime is 544780541. The next prime is 544780547. The reversal of 544780543 is 345087445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345087445 = 5 ⋅69017489.

It is a cyclic number.

It is not a de Polignac number, because 544780543 - 2¹ = 544780541 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 544780496 and 544780505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544780541) 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, 3281728 + ... + 3281893.

It is an arithmetic number, because the mean of its divisors is an integer number (137836062).

Almost surely, 2^544780543 is an apocalyptic number.

544780543 is a deficient number, since it is larger than the sum of its proper divisors (6563705).

544780543 is an equidigital number, since it uses as much as digits as its factorization.

544780543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563704.

The product of its (nonzero) digits is 268800, while the sum is 40.

The square root of 544780543 is about 23340.5343340721. The cubic root of 544780543 is about 816.7212636182.

The spelling of 544780543 in words is "five hundred forty-four million, seven hundred eighty thousand, five hundred forty-three".