165345127 has 2 divisors, whose sum is σ = 165345128. Its totient is φ = 165345126.

The previous prime is 165345121. The next prime is 165345143. The reversal of 165345127 is 721543561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165345127 - 2¹⁵ = 165312359 is a prime.

It is a super-2 number, since 2×165345127² = 54678022045292258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165345092 and 165345101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165345121) 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, 82672563 + 82672564.

It is an arithmetic number, because the mean of its divisors is an integer number (82672564).

Almost surely, 2^165345127 is an apocalyptic number.

165345127 is a deficient number, since it is larger than the sum of its proper divisors (1).

165345127 is an equidigital number, since it uses as much as digits as its factorization.

165345127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 165345127 is about 12858.6596113281. The cubic root of 165345127 is about 548.8628040402.

Adding to 165345127 its reverse (721543561), we get a palindrome (886888688).

The spelling of 165345127 in words is "one hundred sixty-five million, three hundred forty-five thousand, one hundred twenty-seven".