155065171 has 2 divisors, whose sum is σ = 155065172. Its totient is φ = 155065170.

The previous prime is 155065159. The next prime is 155065189. The reversal of 155065171 is 171560551.

It is a weak prime.

It is an emirp because it is prime and its reverse (171560551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155065171 - 2⁵ = 155065139 is a prime.

It is not a weakly prime, because it can be changed into another prime (155065571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77532585 + 77532586.

It is an arithmetic number, because the mean of its divisors is an integer number (77532586).

Almost surely, 2^155065171 is an apocalyptic number.

155065171 is a deficient number, since it is larger than the sum of its proper divisors (1).

155065171 is an equidigital number, since it uses as much as digits as its factorization.

155065171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 155065171 is about 12452.5166532713. The cubic root of 155065171 is about 537.2438105597.

It can be divided in two parts, 155065 and 171, that added together give a square (155236 = 394²).

The spelling of 155065171 in words is "one hundred fifty-five million, sixty-five thousand, one hundred seventy-one".