543793321 has 2 divisors, whose sum is σ = 543793322. Its totient is φ = 543793320.

The previous prime is 543793309. The next prime is 543793333. The reversal of 543793321 is 123397345.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (543793309) and next prime (543793333).

It can be written as a sum of positive squares in only one way, i.e., 470022400 + 73770921 = 21680^2 + 8589^2 .

It is a cyclic number.

It is not a de Polignac number, because 543793321 - 2¹¹ = 543791273 is a prime.

It is a super-2 number, since 2×543793321² = 591422351928418082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (543793391) 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 as a sum of consecutive naturals, namely, 271896660 + 271896661.

It is an arithmetic number, because the mean of its divisors is an integer number (271896661).

Almost surely, 2^543793321 is an apocalyptic number.

It is an amenable number.

543793321 is a deficient number, since it is larger than the sum of its proper divisors (1).

543793321 is an equidigital number, since it uses as much as digits as its factorization.

543793321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 543793321 is about 23319.3765139637. The cubic root of 543793321 is about 816.2276258674.

The spelling of 543793321 in words is "five hundred forty-three million, seven hundred ninety-three thousand, three hundred twenty-one".