102047171 has 2 divisors, whose sum is σ = 102047172. Its totient is φ = 102047170.

The previous prime is 102047149. The next prime is 102047173. The reversal of 102047171 is 171740201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102047171 is a prime.

It is a Sophie Germain prime.

Together with 102047173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102047173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51023585 + 51023586.

It is an arithmetic number, because the mean of its divisors is an integer number (51023586).

Almost surely, 2^102047171 is an apocalyptic number.

102047171 is a deficient number, since it is larger than the sum of its proper divisors (1).

102047171 is an equidigital number, since it uses as much as digits as its factorization.

102047171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 102047171 is about 10101.8399809144. The cubic root of 102047171 is about 467.3048873623.

Adding to 102047171 its reverse (171740201), we get a palindrome (273787372).

The spelling of 102047171 in words is "one hundred two million, forty-seven thousand, one hundred seventy-one".