543553 has 2 divisors, whose sum is σ = 543554. Its totient is φ = 543552.

The previous prime is 543551. The next prime is 543593. The reversal of 543553 is 355345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369664 + 173889 = 608^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 543553 - 2¹ = 543551 is a prime.

Together with 543551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (543551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271776 + 271777.

It is an arithmetic number, because the mean of its divisors is an integer number (271777).

2⁵⁴³⁵⁵³ is an apocalyptic number.

It is an amenable number.

543553 is a deficient number, since it is larger than the sum of its proper divisors (1).

543553 is an equidigital number, since it uses as much as digits as its factorization.

543553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 25.

The square root of 543553 is about 737.2604695764. The cubic root of 543553 is about 81.6107368449.

Adding to 543553 its reverse (355345), we get a palindrome (898898).

The spelling of 543553 in words is "five hundred forty-three thousand, five hundred fifty-three".