543613 has 4 divisors (see below), whose sum is σ = 621280. Its totient is φ = 465948.

The previous prime is 543611. The next prime is 543617. The reversal of 543613 is 316345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 543613 - 2¹ = 543611 is a prime.

It is a Duffinian number.

543613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38823 + ... + 38836.

It is an arithmetic number, because the mean of its divisors is an integer number (155320).

2⁵⁴³⁶¹³ is an apocalyptic number.

It is an amenable number.

543613 is a deficient number, since it is larger than the sum of its proper divisors (77667).

543613 is an equidigital number, since it uses as much as digits as its factorization.

543613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77666.

The product of its digits is 1080, while the sum is 22.

The square root of 543613 is about 737.3011596356. The cubic root of 543613 is about 81.6137395966.

Adding to 543613 its reverse (316345), we get a palindrome (859958).

It can be divided in two parts, 543 and 613, that added together give a square (1156 = 34²).

The spelling of 543613 in words is "five hundred forty-three thousand, six hundred thirteen".