166452443 has 2 divisors, whose sum is σ = 166452444. Its totient is φ = 166452442.

The previous prime is 166452401. The next prime is 166452463. The reversal of 166452443 is 344254661.

It is a strong prime.

It is an emirp because it is prime and its reverse (344254661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166452443 - 2⁶ = 166452379 is a prime.

It is equal to p_9315593 and since 166452443 and 9315593 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (166452463) 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, 83226221 + 83226222.

It is an arithmetic number, because the mean of its divisors is an integer number (83226222).

Almost surely, 2^166452443 is an apocalyptic number.

166452443 is a deficient number, since it is larger than the sum of its proper divisors (1).

166452443 is an equidigital number, since it uses as much as digits as its factorization.

166452443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 166452443 is about 12901.6449726382. The cubic root of 166452443 is about 550.0853234019.

The spelling of 166452443 in words is "one hundred sixty-six million, four hundred fifty-two thousand, four hundred forty-three".