105545543 has 2 divisors, whose sum is σ = 105545544. Its totient is φ = 105545542.

The previous prime is 105545443. The next prime is 105545563. The reversal of 105545543 is 345545501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105545543 - 2¹⁰ = 105544519 is a prime.

It is a super-2 number, since 2×105545543² = 22279723294329698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105545563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52772771 + 52772772.

It is an arithmetic number, because the mean of its divisors is an integer number (52772772).

Almost surely, 2^105545543 is an apocalyptic number.

105545543 is a deficient number, since it is larger than the sum of its proper divisors (1).

105545543 is an equidigital number, since it uses as much as digits as its factorization.

105545543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 105545543 is about 10273.5360514284. The cubic root of 105545543 is about 472.5850362520.

The spelling of 105545543 in words is "one hundred five million, five hundred forty-five thousand, five hundred forty-three".