102165065 has 4 divisors (see below), whose sum is σ = 122598084. Its totient is φ = 81732048.

The previous prime is 102165059. The next prime is 102165083. The reversal of 102165065 is 560561201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560561201 = 43 ⋅13036307.

It can be written as a sum of positive squares in 2 ways, for example, as 55160329 + 47004736 = 7427^2 + 6856^2 .

It is a cyclic number.

It is not a de Polignac number, because 102165065 - 2⁶ = 102165001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10216502 + ... + 10216511.

It is an arithmetic number, because the mean of its divisors is an integer number (30649521).

Almost surely, 2^102165065 is an apocalyptic number.

It is an amenable number.

102165065 is a deficient number, since it is larger than the sum of its proper divisors (20433019).

102165065 is an equidigital number, since it uses as much as digits as its factorization.

102165065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20433018.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 102165065 is about 10107.6735701149. The cubic root of 102165065 is about 467.4847755439.

The spelling of 102165065 in words is "one hundred two million, one hundred sixty-five thousand, sixty-five".