291167 has 2 divisors, whose sum is σ = 291168. Its totient is φ = 291166.

The previous prime is 291143. The next prime is 291169. The reversal of 291167 is 761192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 291167 - 2⁶ = 291103 is a prime.

Together with 291169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145583 + 145584.

It is an arithmetic number, because the mean of its divisors is an integer number (145584).

2²⁹¹¹⁶⁷ is an apocalyptic number.

291167 is a deficient number, since it is larger than the sum of its proper divisors (1).

291167 is an equidigital number, since it uses as much as digits as its factorization.

291167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 291167 is about 539.5989251287. The cubic root of 291167 is about 66.2797279661.

The spelling of 291167 in words is "two hundred ninety-one thousand, one hundred sixty-seven".