165254447 has 2 divisors, whose sum is σ = 165254448. Its totient is φ = 165254446.

The previous prime is 165254443. The next prime is 165254449. The reversal of 165254447 is 744452561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165254447 - 2² = 165254443 is a prime.

Together with 165254449, it forms a pair of twin primes.

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 165254447.

It is a congruent number.

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, 82627223 + 82627224.

It is an arithmetic number, because the mean of its divisors is an integer number (82627224).

Almost surely, 2^165254447 is an apocalyptic number.

165254447 is a deficient number, since it is larger than the sum of its proper divisors (1).

165254447 is an equidigital number, since it uses as much as digits as its factorization.

165254447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 165254447 is about 12855.1330992721. The cubic root of 165254447 is about 548.7624483350.

The spelling of 165254447 in words is "one hundred sixty-five million, two hundred fifty-four thousand, four hundred forty-seven".