543940633 has 2 divisors, whose sum is σ = 543940634. Its totient is φ = 543940632.

The previous prime is 543940627. The next prime is 543940667. The reversal of 543940633 is 336049345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539725824 + 4214809 = 23232^2 + 2053^2 .

It is a cyclic number.

It is not a de Polignac number, because 543940633 - 2⁹ = 543940121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543940592 and 543940601.

It is not a weakly prime, because it can be changed into another prime (543940613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271970316 + 271970317.

It is an arithmetic number, because the mean of its divisors is an integer number (271970317).

Almost surely, 2^543940633 is an apocalyptic number.

It is an amenable number.

543940633 is a deficient number, since it is larger than the sum of its proper divisors (1).

543940633 is an equidigital number, since it uses as much as digits as its factorization.

543940633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 543940633 is about 23322.5348750945. The cubic root of 543940633 is about 816.3013237617.

Adding to 543940633 its reverse (336049345), we get a palindrome (879989978).

The spelling of 543940633 in words is "five hundred forty-three million, nine hundred forty thousand, six hundred thirty-three".