163545155 has 4 divisors (see below), whose sum is σ = 196254192. Its totient is φ = 130836120.

The previous prime is 163545149. The next prime is 163545169. The reversal of 163545155 is 551545361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551545361 = 179 ⋅3081259.

It is a de Polignac number, because none of the positive numbers 2^k-163545155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16354511 + ... + 16354520.

It is an arithmetic number, because the mean of its divisors is an integer number (49063548).

Almost surely, 2^163545155 is an apocalyptic number.

163545155 is a deficient number, since it is larger than the sum of its proper divisors (32709037).

163545155 is an equidigital number, since it uses as much as digits as its factorization.

163545155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32709036.

The product of its digits is 45000, while the sum is 35.

The square root of 163545155 is about 12788.4774308750. The cubic root of 163545155 is about 546.8638650468.

The spelling of 163545155 in words is "one hundred sixty-three million, five hundred forty-five thousand, one hundred fifty-five".