543434321 has 2 divisors, whose sum is σ = 543434322. Its totient is φ = 543434320.

The previous prime is 543434303. The next prime is 543434341. The reversal of 543434321 is 123434345.

543434321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472453696 + 70980625 = 21736^2 + 8425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543434321 is a prime.

It is a super-2 number, since 2×543434321² = 590641722481462082, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (543434341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271717160 + 271717161.

It is an arithmetic number, because the mean of its divisors is an integer number (271717161).

Almost surely, 2^543434321 is an apocalyptic number.

It is an amenable number.

543434321 is a deficient number, since it is larger than the sum of its proper divisors (1).

543434321 is an equidigital number, since it uses as much as digits as its factorization.

543434321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 29.

The square root of 543434321 is about 23311.6777817471. The cubic root of 543434321 is about 816.0479680127.

Adding to 543434321 its reverse (123434345), we get a palindrome (666868666).

The spelling of 543434321 in words is "five hundred forty-three million, four hundred thirty-four thousand, three hundred twenty-one".