83278171 has 2 divisors, whose sum is σ = 83278172. Its totient is φ = 83278170.

The previous prime is 83278163. The next prime is 83278199. The reversal of 83278171 is 17187238.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83278171 - 2³ = 83278163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83278171.

It is not a weakly prime, because it can be changed into another prime (83278471) 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, 41639085 + 41639086.

It is an arithmetic number, because the mean of its divisors is an integer number (41639086).

Almost surely, 2^83278171 is an apocalyptic number.

83278171 is a deficient number, since it is larger than the sum of its proper divisors (1).

83278171 is an equidigital number, since it uses as much as digits as its factorization.

83278171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 37.

The square root of 83278171 is about 9125.6874261614. The cubic root of 83278171 is about 436.6938336211.

It can be divided in two parts, 832 and 78171, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 83278171 in words is "eighty-three million, two hundred seventy-eight thousand, one hundred seventy-one".