543076421 has 2 divisors, whose sum is σ = 543076422. Its totient is φ = 543076420.

The previous prime is 543076403. The next prime is 543076427. The reversal of 543076421 is 124670345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529644196 + 13432225 = 23014^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 543076421 - 2¹⁸ = 542814277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543076427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271538210 + 271538211.

It is an arithmetic number, because the mean of its divisors is an integer number (271538211).

Almost surely, 2^543076421 is an apocalyptic number.

It is an amenable number.

543076421 is a deficient number, since it is larger than the sum of its proper divisors (1).

543076421 is an equidigital number, since it uses as much as digits as its factorization.

543076421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 543076421 is about 23304.0001072777. Note that the first 3 decimals coincide. The cubic root of 543076421 is about 815.8687818648.

The spelling of 543076421 in words is "five hundred forty-three million, seventy-six thousand, four hundred twenty-one".