165065101 has 2 divisors, whose sum is σ = 165065102. Its totient is φ = 165065100.

The previous prime is 165065099. The next prime is 165065113. The reversal of 165065101 is 101560561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162537001 + 2528100 = 12749^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 165065101 - 2¹ = 165065099 is a prime.

Together with 165065099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165065401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82532550 + 82532551.

It is an arithmetic number, because the mean of its divisors is an integer number (82532551).

Almost surely, 2^165065101 is an apocalyptic number.

It is an amenable number.

165065101 is a deficient number, since it is larger than the sum of its proper divisors (1).

165065101 is an equidigital number, since it uses as much as digits as its factorization.

165065101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 165065101 is about 12847.7663817490. The cubic root of 165065101 is about 548.5527803829.

The spelling of 165065101 in words is "one hundred sixty-five million, sixty-five thousand, one hundred one".