543423557 has 2 divisors, whose sum is σ = 543423558. Its totient is φ = 543423556.

The previous prime is 543423509. The next prime is 543423619. The reversal of 543423557 is 755324345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274266721 + 269156836 = 16561^2 + 16406^2 .

It is a cyclic number.

It is not a de Polignac number, because 543423557 - 2¹⁰ = 543422533 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 543423557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543423757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271711778 + 271711779.

It is an arithmetic number, because the mean of its divisors is an integer number (271711779).

Almost surely, 2^543423557 is an apocalyptic number.

It is an amenable number.

543423557 is a deficient number, since it is larger than the sum of its proper divisors (1).

543423557 is an equidigital number, since it uses as much as digits as its factorization.

543423557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 38.

The square root of 543423557 is about 23311.4469091903. The cubic root of 543423557 is about 816.0425800581.

The spelling of 543423557 in words is "five hundred forty-three million, four hundred twenty-three thousand, five hundred fifty-seven".