543466991 has 4 divisors (see below), whose sum is σ = 550346400. Its totient is φ = 536587584.

The previous prime is 543466933. The next prime is 543467009. The reversal of 543466991 is 199664345.

It is a happy number.

543466991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199664345 = 5 ⋅39932869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543466991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543460991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439586 + ... + 3439743.

It is an arithmetic number, because the mean of its divisors is an integer number (137586600).

Almost surely, 2^543466991 is an apocalyptic number.

543466991 is a deficient number, since it is larger than the sum of its proper divisors (6879409).

543466991 is an equidigital number, since it uses as much as digits as its factorization.

543466991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879408.

The product of its digits is 699840, while the sum is 47.

The square root of 543466991 is about 23312.3784929809. The cubic root of 543466991 is about 816.0643206499.

The spelling of 543466991 in words is "five hundred forty-three million, four hundred sixty-six thousand, nine hundred ninety-one".