166055471 has 2 divisors, whose sum is σ = 166055472. Its totient is φ = 166055470.

The previous prime is 166055443. The next prime is 166055489. The reversal of 166055471 is 174550661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166055471 - 2¹⁴ = 166039087 is a prime.

It is a super-3 number, since 3×166055471³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166055401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83027735 + 83027736.

It is an arithmetic number, because the mean of its divisors is an integer number (83027736).

Almost surely, 2^166055471 is an apocalyptic number.

166055471 is a deficient number, since it is larger than the sum of its proper divisors (1).

166055471 is an equidigital number, since it uses as much as digits as its factorization.

166055471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 166055471 is about 12886.2512392084. The cubic root of 166055471 is about 549.6476762820.

The spelling of 166055471 in words is "one hundred sixty-six million, fifty-five thousand, four hundred seventy-one".