228001171 has 4 divisors (see below), whose sum is σ = 228079000. Its totient is φ = 227923344.

The previous prime is 228001157. The next prime is 228001181. The reversal of 228001171 is 171100822.

228001171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228001171 - 2⁷ = 228001043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228001181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34341 + ... + 40438.

It is an arithmetic number, because the mean of its divisors is an integer number (57019750).

Almost surely, 2^228001171 is an apocalyptic number.

228001171 is a deficient number, since it is larger than the sum of its proper divisors (77829).

228001171 is an equidigital number, since it uses as much as digits as its factorization.

228001171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77828.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 228001171 is about 15099.7076461765. The cubic root of 228001171 is about 610.9125203005.

Adding to 228001171 its reverse (171100822), we get a palindrome (399101993).

The spelling of 228001171 in words is "two hundred twenty-eight million, one thousand, one hundred seventy-one".