163228553 has 2 divisors, whose sum is σ = 163228554. Its totient is φ = 163228552.

The previous prime is 163228537. The next prime is 163228589. The reversal of 163228553 is 355822361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95199049 + 68029504 = 9757^2 + 8248^2 .

It is an emirp because it is prime and its reverse (355822361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163228553 - 2⁴ = 163228537 is a prime.

It is not a weakly prime, because it can be changed into another prime (163224553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81614276 + 81614277.

It is an arithmetic number, because the mean of its divisors is an integer number (81614277).

Almost surely, 2^163228553 is an apocalyptic number.

It is an amenable number.

163228553 is a deficient number, since it is larger than the sum of its proper divisors (1).

163228553 is an equidigital number, since it uses as much as digits as its factorization.

163228553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 163228553 is about 12776.0930256476. The cubic root of 163228553 is about 546.5107514821.

The spelling of 163228553 in words is "one hundred sixty-three million, two hundred twenty-eight thousand, five hundred fifty-three".