165403127 has 2 divisors, whose sum is σ = 165403128. Its totient is φ = 165403126.

The previous prime is 165403093. The next prime is 165403171. The reversal of 165403127 is 721304561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165403127 - 2⁸ = 165402871 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165403127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165403177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82701563 + 82701564.

It is an arithmetic number, because the mean of its divisors is an integer number (82701564).

Almost surely, 2^165403127 is an apocalyptic number.

165403127 is a deficient number, since it is larger than the sum of its proper divisors (1).

165403127 is an equidigital number, since it uses as much as digits as its factorization.

165403127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 165403127 is about 12860.9147030839. The cubic root of 165403127 is about 548.9269734973.

Adding to 165403127 its reverse (721304561), we get a palindrome (886707688).

The spelling of 165403127 in words is "one hundred sixty-five million, four hundred three thousand, one hundred twenty-seven".