165254443 has 2 divisors, whose sum is σ = 165254444. Its totient is φ = 165254442.

The previous prime is 165254437. The next prime is 165254447. The reversal of 165254443 is 344452561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165254443 - 2⁹ = 165253931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165254399 and 165254408.

It is not a weakly prime, because it can be changed into another prime (165254447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82627221 + 82627222.

It is an arithmetic number, because the mean of its divisors is an integer number (82627222).

Almost surely, 2^165254443 is an apocalyptic number.

165254443 is a deficient number, since it is larger than the sum of its proper divisors (1).

165254443 is an equidigital number, since it uses as much as digits as its factorization.

165254443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 34.

The square root of 165254443 is about 12855.1329436922. The cubic root of 165254443 is about 548.7624439074.

The spelling of 165254443 in words is "one hundred sixty-five million, two hundred fifty-four thousand, four hundred forty-three".