155971159 has 2 divisors, whose sum is σ = 155971160. Its totient is φ = 155971158.

The previous prime is 155971157. The next prime is 155971163. The reversal of 155971159 is 951179551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155971159 - 2¹ = 155971157 is a prime.

Together with 155971157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155971157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77985579 + 77985580.

It is an arithmetic number, because the mean of its divisors is an integer number (77985580).

Almost surely, 2^155971159 is an apocalyptic number.

155971159 is a deficient number, since it is larger than the sum of its proper divisors (1).

155971159 is an equidigital number, since it uses as much as digits as its factorization.

155971159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70875, while the sum is 43.

The square root of 155971159 is about 12488.8413794075. The cubic root of 155971159 is about 538.2880845412.

The spelling of 155971159 in words is "one hundred fifty-five million, nine hundred seventy-one thousand, one hundred fifty-nine".