165117047 has 2 divisors, whose sum is σ = 165117048. Its totient is φ = 165117046.

The previous prime is 165117041. The next prime is 165117061. The reversal of 165117047 is 740711561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165117047 - 2¹⁶ = 165051511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165117041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82558523 + 82558524.

It is an arithmetic number, because the mean of its divisors is an integer number (82558524).

Almost surely, 2^165117047 is an apocalyptic number.

165117047 is a deficient number, since it is larger than the sum of its proper divisors (1).

165117047 is an equidigital number, since it uses as much as digits as its factorization.

165117047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 165117047 is about 12849.7878192599. The cubic root of 165117047 is about 548.6103175484.

The spelling of 165117047 in words is "one hundred sixty-five million, one hundred seventeen thousand, forty-seven".