165105043 has 2 divisors, whose sum is σ = 165105044. Its totient is φ = 165105042.

The previous prime is 165104999. The next prime is 165105047. The reversal of 165105043 is 340501561.

It is a strong prime.

It is an emirp because it is prime and its reverse (340501561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165105043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165104999 and 165105017.

It is not a weakly prime, because it can be changed into another prime (165105047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82552521 + 82552522.

It is an arithmetic number, because the mean of its divisors is an integer number (82552522).

Almost surely, 2^165105043 is an apocalyptic number.

165105043 is a deficient number, since it is larger than the sum of its proper divisors (1).

165105043 is an equidigital number, since it uses as much as digits as its factorization.

165105043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 165105043 is about 12849.3207213455. The cubic root of 165105043 is about 548.5970225799.

The spelling of 165105043 in words is "one hundred sixty-five million, one hundred five thousand, forty-three".