163310553 has 16 divisors (see below), whose sum is σ = 276504960. Its totient is φ = 93320208.

The previous prime is 163310549. The next prime is 163310561. The reversal of 163310553 is 355013361.

It is not a de Polignac number, because 163310553 - 2² = 163310549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (163310533) 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 in 15 ways as a sum of consecutive naturals, for example, 431850 + ... + 432227.

It is an arithmetic number, because the mean of its divisors is an integer number (17281560).

Almost surely, 2^163310553 is an apocalyptic number.

It is an amenable number.

163310553 is a deficient number, since it is larger than the sum of its proper divisors (113194407).

163310553 is an equidigital number, since it uses as much as digits as its factorization.

163310553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864093 (or 864087 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 163310553 is about 12779.3017414881. The cubic root of 163310553 is about 546.6022517713.

The spelling of 163310553 in words is "one hundred sixty-three million, three hundred ten thousand, five hundred fifty-three".