100543489 has 2 divisors, whose sum is σ = 100543490. Its totient is φ = 100543488.

The previous prime is 100543477. The next prime is 100543517. The reversal of 100543489 is 984345001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 39187600 = 7833^2 + 6260^2 .

It is an emirp because it is prime and its reverse (984345001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100543489 - 2⁷ = 100543361 is a prime.

It is a super-3 number, since 3×100543489³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (100543789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50271744 + 50271745.

It is an arithmetic number, because the mean of its divisors is an integer number (50271745).

Almost surely, 2^100543489 is an apocalyptic number.

It is an amenable number.

100543489 is a deficient number, since it is larger than the sum of its proper divisors (1).

100543489 is an equidigital number, since it uses as much as digits as its factorization.

100543489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 100543489 is about 10027.1376274588. The cubic root of 100543489 is about 464.9982487312.

The spelling of 100543489 in words is "one hundred million, five hundred forty-three thousand, four hundred eighty-nine".