86122171 has 2 divisors, whose sum is σ = 86122172. Its totient is φ = 86122170.

The previous prime is 86122147. The next prime is 86122177. The reversal of 86122171 is 17122168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86122171 - 2⁵ = 86122139 is a prime.

It is not a weakly prime, because it can be changed into another prime (86122177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43061085 + 43061086.

It is an arithmetic number, because the mean of its divisors is an integer number (43061086).

Almost surely, 2^86122171 is an apocalyptic number.

86122171 is a deficient number, since it is larger than the sum of its proper divisors (1).

86122171 is an equidigital number, since it uses as much as digits as its factorization.

86122171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 86122171 is about 9280.2031766551. The cubic root of 86122171 is about 441.6094141681.

It can be divided in two parts, 861 and 22171, that added together give a palindrome (23032).

The spelling of 86122171 in words is "eighty-six million, one hundred twenty-two thousand, one hundred seventy-one".