87530171 has 2 divisors, whose sum is σ = 87530172. Its totient is φ = 87530170.

The previous prime is 87530129. The next prime is 87530221. The reversal of 87530171 is 17103578.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87530171 - 2¹⁰ = 87529147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (87530101) 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, 43765085 + 43765086.

It is an arithmetic number, because the mean of its divisors is an integer number (43765086).

Almost surely, 2^87530171 is an apocalyptic number.

87530171 is a deficient number, since it is larger than the sum of its proper divisors (1).

87530171 is an equidigital number, since it uses as much as digits as its factorization.

87530171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 87530171 is about 9355.7560357247. The cubic root of 87530171 is about 444.0030215821.

The spelling of 87530171 in words is "eighty-seven million, five hundred thirty thousand, one hundred seventy-one".