171121967 has 2 divisors, whose sum is σ = 171121968. Its totient is φ = 171121966.

The previous prime is 171121943. The next prime is 171121981. The reversal of 171121967 is 769121171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171121967 - 2⁶ = 171121903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171121567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85560983 + 85560984.

It is an arithmetic number, because the mean of its divisors is an integer number (85560984).

Almost surely, 2^171121967 is an apocalyptic number.

171121967 is a deficient number, since it is larger than the sum of its proper divisors (1).

171121967 is an equidigital number, since it uses as much as digits as its factorization.

171121967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 35.

The square root of 171121967 is about 13081.3595241473. The cubic root of 171121967 is about 555.1818433973.

The spelling of 171121967 in words is "one hundred seventy-one million, one hundred twenty-one thousand, nine hundred sixty-seven".