165351047 has 2 divisors, whose sum is σ = 165351048. Its totient is φ = 165351046.

The previous prime is 165351041. The next prime is 165351077. The reversal of 165351047 is 740153561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165351047 - 2⁴ = 165351031 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 (165351041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82675523 + 82675524.

It is an arithmetic number, because the mean of its divisors is an integer number (82675524).

Almost surely, 2^165351047 is an apocalyptic number.

165351047 is a deficient number, since it is larger than the sum of its proper divisors (1).

165351047 is an equidigital number, since it uses as much as digits as its factorization.

165351047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 165351047 is about 12858.8898043338. The cubic root of 165351047 is about 548.8693544379.

The spelling of 165351047 in words is "one hundred sixty-five million, three hundred fifty-one thousand, forty-seven".