544781 has 2 divisors, whose sum is σ = 544782. Its totient is φ = 544780.

The previous prime is 544771. The next prime is 544793. The reversal of 544781 is 187445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 11881 = 730^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 544781 - 2⁶ = 544717 is a prime.

It is a super-2 number, since 2×544781² = 593572675922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 544781.

It is not a weakly prime, because it can be changed into another prime (544721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272390 + 272391.

It is an arithmetic number, because the mean of its divisors is an integer number (272391).

2⁵⁴⁴⁷⁸¹ is an apocalyptic number.

It is an amenable number.

544781 is a deficient number, since it is larger than the sum of its proper divisors (1).

544781 is an equidigital number, since it uses as much as digits as its factorization.

544781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 544781 is about 738.0928125920. The cubic root of 544781 is about 81.6721491992.

The spelling of 544781 in words is "five hundred forty-four thousand, seven hundred eighty-one".