100105543 has 2 divisors, whose sum is σ = 100105544. Its totient is φ = 100105542.

The previous prime is 100105531. The next prime is 100105549. The reversal of 100105543 is 345501001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100105543 - 2¹³ = 100097351 is a prime.

It is a super-2 number, since 2×100105543² = 20042239478649698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100105543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100105549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50052771 + 50052772.

It is an arithmetic number, because the mean of its divisors is an integer number (50052772).

Almost surely, 2^100105543 is an apocalyptic number.

100105543 is a deficient number, since it is larger than the sum of its proper divisors (1).

100105543 is an equidigital number, since it uses as much as digits as its factorization.

100105543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 100105543 is about 10005.2757583187. The cubic root of 100105543 is about 464.3221216826.

Adding to 100105543 its reverse (345501001), we get a palindrome (445606544).

The spelling of 100105543 in words is "one hundred million, one hundred five thousand, five hundred forty-three".