163426553 has 2 divisors, whose sum is σ = 163426554. Its totient is φ = 163426552.

The previous prime is 163426547. The next prime is 163426577. The reversal of 163426553 is 355624361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144312169 + 19114384 = 12013^2 + 4372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163426553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163420553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81713276 + 81713277.

It is an arithmetic number, because the mean of its divisors is an integer number (81713277).

Almost surely, 2^163426553 is an apocalyptic number.

It is an amenable number.

163426553 is a deficient number, since it is larger than the sum of its proper divisors (1).

163426553 is an equidigital number, since it uses as much as digits as its factorization.

163426553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 35.

The square root of 163426553 is about 12783.8395249628. The cubic root of 163426553 is about 546.7316389083.

The spelling of 163426553 in words is "one hundred sixty-three million, four hundred twenty-six thousand, five hundred fifty-three".