155891167 has 2 divisors, whose sum is σ = 155891168. Its totient is φ = 155891166.

The previous prime is 155891159. The next prime is 155891209. The reversal of 155891167 is 761198551.

It is a weak prime.

It is an emirp because it is prime and its reverse (761198551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155891167 - 2³ = 155891159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155891107) 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, 77945583 + 77945584.

It is an arithmetic number, because the mean of its divisors is an integer number (77945584).

Almost surely, 2^155891167 is an apocalyptic number.

155891167 is a deficient number, since it is larger than the sum of its proper divisors (1).

155891167 is an equidigital number, since it uses as much as digits as its factorization.

155891167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 43.

The square root of 155891167 is about 12485.6384298121. The cubic root of 155891167 is about 538.1960459363.

The spelling of 155891167 in words is "one hundred fifty-five million, eight hundred ninety-one thousand, one hundred sixty-seven".