163522553 has 2 divisors, whose sum is σ = 163522554. Its totient is φ = 163522552.

The previous prime is 163522537. The next prime is 163522589. The reversal of 163522553 is 355225361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101868649 + 61653904 = 10093^2 + 7852^2 .

It is an emirp because it is prime and its reverse (355225361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163522553 - 2⁴ = 163522537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163522523) 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, 81761276 + 81761277.

It is an arithmetic number, because the mean of its divisors is an integer number (81761277).

Almost surely, 2^163522553 is an apocalyptic number.

It is an amenable number.

163522553 is a deficient number, since it is larger than the sum of its proper divisors (1).

163522553 is an equidigital number, since it uses as much as digits as its factorization.

163522553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 163522553 is about 12787.5937142216. The cubic root of 163522553 is about 546.8386716243.

The spelling of 163522553 in words is "one hundred sixty-three million, five hundred twenty-two thousand, five hundred fifty-three".