87171179 has 2 divisors, whose sum is σ = 87171180. Its totient is φ = 87171178.

The previous prime is 87171157. The next prime is 87171233. The reversal of 87171179 is 97117178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87171179 - 2¹² = 87167083 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87171079) 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, 43585589 + 43585590.

It is an arithmetic number, because the mean of its divisors is an integer number (43585590).

Almost surely, 2^87171179 is an apocalyptic number.

87171179 is a deficient number, since it is larger than the sum of its proper divisors (1).

87171179 is an equidigital number, since it uses as much as digits as its factorization.

87171179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 41.

The square root of 87171179 is about 9336.5507014100. The cubic root of 87171179 is about 443.3951856843.

The spelling of 87171179 in words is "eighty-seven million, one hundred seventy-one thousand, one hundred seventy-nine".