163053221 has 2 divisors, whose sum is σ = 163053222. Its totient is φ = 163053220.

The previous prime is 163053179. The next prime is 163053229. The reversal of 163053221 is 122350361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159112996 + 3940225 = 12614^2 + 1985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163053221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163053229) 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, 81526610 + 81526611.

It is an arithmetic number, because the mean of its divisors is an integer number (81526611).

Almost surely, 2^163053221 is an apocalyptic number.

It is an amenable number.

163053221 is a deficient number, since it is larger than the sum of its proper divisors (1).

163053221 is an equidigital number, since it uses as much as digits as its factorization.

163053221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 163053221 is about 12769.2294599165. The cubic root of 163053221 is about 546.3150031475.

The spelling of 163053221 in words is "one hundred sixty-three million, fifty-three thousand, two hundred twenty-one".