163153261 has 2 divisors, whose sum is σ = 163153262. Its totient is φ = 163153260.

The previous prime is 163153229. The next prime is 163153297. The reversal of 163153261 is 162351361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158004900 + 5148361 = 12570^2 + 2269^2 .

It is an emirp because it is prime and its reverse (162351361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163153261 - 2⁵ = 163153229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163153201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81576630 + 81576631.

It is an arithmetic number, because the mean of its divisors is an integer number (81576631).

Almost surely, 2^163153261 is an apocalyptic number.

It is an amenable number.

163153261 is a deficient number, since it is larger than the sum of its proper divisors (1).

163153261 is an equidigital number, since it uses as much as digits as its factorization.

163153261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 163153261 is about 12773.1460885719. The cubic root of 163153261 is about 546.4267093724.

The spelling of 163153261 in words is "one hundred sixty-three million, one hundred fifty-three thousand, two hundred sixty-one".