168521063 has 2 divisors, whose sum is σ = 168521064. Its totient is φ = 168521062.

The previous prime is 168521033. The next prime is 168521077. The reversal of 168521063 is 360125861.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (360125861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168521063 - 2¹⁰ = 168520039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168521033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84260531 + 84260532.

It is an arithmetic number, because the mean of its divisors is an integer number (84260532).

Almost surely, 2^168521063 is an apocalyptic number.

168521063 is a deficient number, since it is larger than the sum of its proper divisors (1).

168521063 is an equidigital number, since it uses as much as digits as its factorization.

168521063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 168521063 is about 12981.5662768404. The cubic root of 168521063 is about 552.3547121100.

The spelling of 168521063 in words is "one hundred sixty-eight million, five hundred twenty-one thousand, sixty-three".