543161987 has 8 divisors (see below), whose sum is σ = 572295360. Its totient is φ = 514083240.

The previous prime is 543161981. The next prime is 543162001. The reversal of 543161987 is 789161345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 543161987 - 2⁶ = 543161923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543161981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7628 + ... + 33830.

It is an arithmetic number, because the mean of its divisors is an integer number (71536920).

Almost surely, 2^543161987 is an apocalyptic number.

543161987 is a deficient number, since it is larger than the sum of its proper divisors (29133373).

543161987 is a wasteful number, since it uses less digits than its factorization.

543161987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27313.

The product of its digits is 181440, while the sum is 44.

The square root of 543161987 is about 23305.8359000487. The cubic root of 543161987 is about 815.9116284817.

The spelling of 543161987 in words is "five hundred forty-three million, one hundred sixty-one thousand, nine hundred eighty-seven".