102165047 has 2 divisors, whose sum is σ = 102165048. Its totient is φ = 102165046.

The previous prime is 102165043. The next prime is 102165059. The reversal of 102165047 is 740561201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102165047 - 2² = 102165043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102165043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51082523 + 51082524.

It is an arithmetic number, because the mean of its divisors is an integer number (51082524).

Almost surely, 2^102165047 is an apocalyptic number.

102165047 is a deficient number, since it is larger than the sum of its proper divisors (1).

102165047 is an equidigital number, since it uses as much as digits as its factorization.

102165047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 102165047 is about 10107.6726797023. The cubic root of 102165047 is about 467.4847480893.

The spelling of 102165047 in words is "one hundred two million, one hundred sixty-five thousand, forty-seven".