220543161 has 8 divisors (see below), whose sum is σ = 294815040. Its totient is φ = 146650032.

The previous prime is 220543153. The next prime is 220543171. The reversal of 220543161 is 161345022.

220543161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220543161 - 2³ = 220543153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220543171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93325 + ... + 95658.

It is an arithmetic number, because the mean of its divisors is an integer number (36851880).

Almost surely, 2^220543161 is an apocalyptic number.

It is an amenable number.

220543161 is a deficient number, since it is larger than the sum of its proper divisors (74271879).

220543161 is a wasteful number, since it uses less digits than its factorization.

220543161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189375.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 220543161 is about 14850.6956402722. The cubic root of 220543161 is about 604.1774775225.

Adding to 220543161 its reverse (161345022), we get a palindrome (381888183).

The spelling of 220543161 in words is "two hundred twenty million, five hundred forty-three thousand, one hundred sixty-one".