82105187 has 2 divisors, whose sum is σ = 82105188. Its totient is φ = 82105186.

The previous prime is 82105169. The next prime is 82105201. The reversal of 82105187 is 78150128.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82105187 - 2⁶ = 82105123 is a prime.

It is not a weakly prime, because it can be changed into another prime (82105787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41052593 + 41052594.

It is an arithmetic number, because the mean of its divisors is an integer number (41052594).

Almost surely, 2^82105187 is an apocalyptic number.

82105187 is a deficient number, since it is larger than the sum of its proper divisors (1).

82105187 is an equidigital number, since it uses as much as digits as its factorization.

82105187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 82105187 is about 9061.1912572244. The cubic root of 82105187 is about 434.6338346387.

The spelling of 82105187 in words is "eighty-two million, one hundred five thousand, one hundred eighty-seven".