165112447 has 2 divisors, whose sum is σ = 165112448. Its totient is φ = 165112446.

The previous prime is 165112439. The next prime is 165112511. The reversal of 165112447 is 744211561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165112447 - 2³ = 165112439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165112427) 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, 82556223 + 82556224.

It is an arithmetic number, because the mean of its divisors is an integer number (82556224).

Almost surely, 2^165112447 is an apocalyptic number.

165112447 is a deficient number, since it is larger than the sum of its proper divisors (1).

165112447 is an equidigital number, since it uses as much as digits as its factorization.

165112447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 165112447 is about 12849.6088267309. The cubic root of 165112447 is about 548.6052229182.

The spelling of 165112447 in words is "one hundred sixty-five million, one hundred twelve thousand, four hundred forty-seven".