163550553 has 16 divisors (see below), whose sum is σ = 223677696. Its totient is φ = 106248960.

The previous prime is 163550533. The next prime is 163550573. The reversal of 163550553 is 355055361.

It is an interprime number because it is at equal distance from previous prime (163550533) and next prime (163550573).

It is not a de Polignac number, because 163550553 - 2¹³ = 163542361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163550503) 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 in 15 ways as a sum of consecutive naturals, for example, 31575 + ... + 36387.

It is an arithmetic number, because the mean of its divisors is an integer number (13979856).

Almost surely, 2^163550553 is an apocalyptic number.

It is an amenable number.

163550553 is a deficient number, since it is larger than the sum of its proper divisors (60127143).

163550553 is a wasteful number, since it uses less digits than its factorization.

163550553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104.

The product of its (nonzero) digits is 33750, while the sum is 33.

The square root of 163550553 is about 12788.6884784954. The cubic root of 163550553 is about 546.8698816087.

The spelling of 163550553 in words is "one hundred sixty-three million, five hundred fifty thousand, five hundred fifty-three".