105581143 has 2 divisors, whose sum is σ = 105581144. Its totient is φ = 105581142.

The previous prime is 105581123. The next prime is 105581173. The reversal of 105581143 is 341185501.

It is a weak prime.

It is an emirp because it is prime and its reverse (341185501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105581143 - 2²⁵ = 72026711 is a prime.

It is a super-2 number, since 2×105581143² = 22294755514372898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105581123) 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, 52790571 + 52790572.

It is an arithmetic number, because the mean of its divisors is an integer number (52790572).

Almost surely, 2^105581143 is an apocalyptic number.

105581143 is a deficient number, since it is larger than the sum of its proper divisors (1).

105581143 is an equidigital number, since it uses as much as digits as its factorization.

105581143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 105581143 is about 10275.2685123066. The cubic root of 105581143 is about 472.6381638265.

The spelling of 105581143 in words is "one hundred five million, five hundred eighty-one thousand, one hundred forty-three".