165254449 has 2 divisors, whose sum is σ = 165254450. Its totient is φ = 165254448.

The previous prime is 165254447. The next prime is 165254473. The reversal of 165254449 is 944452561.

165254449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162103824 + 3150625 = 12732^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 165254449 - 2¹ = 165254447 is a prime.

Together with 165254447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (165254443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82627224 + 82627225.

It is an arithmetic number, because the mean of its divisors is an integer number (82627225).

Almost surely, 2^165254449 is an apocalyptic number.

It is an amenable number.

165254449 is a deficient number, since it is larger than the sum of its proper divisors (1).

165254449 is an equidigital number, since it uses as much as digits as its factorization.

165254449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 40.

The square root of 165254449 is about 12855.1331770620. The cubic root of 165254449 is about 548.7624505488.

The spelling of 165254449 in words is "one hundred sixty-five million, two hundred fifty-four thousand, four hundred forty-nine".