145663171 has 2 divisors, whose sum is σ = 145663172. Its totient is φ = 145663170.

The previous prime is 145663151. The next prime is 145663229. The reversal of 145663171 is 171366541.

It is a weak prime.

It is an emirp because it is prime and its reverse (171366541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145663171 - 2¹³ = 145654979 is a prime.

It is not a weakly prime, because it can be changed into another prime (145663121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72831585 + 72831586.

It is an arithmetic number, because the mean of its divisors is an integer number (72831586).

Almost surely, 2^145663171 is an apocalyptic number.

145663171 is a deficient number, since it is larger than the sum of its proper divisors (1).

145663171 is an equidigital number, since it uses as much as digits as its factorization.

145663171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 145663171 is about 12069.0998421589. The cubic root of 145663171 is about 526.1584950816.

The spelling of 145663171 in words is "one hundred forty-five million, six hundred sixty-three thousand, one hundred seventy-one".