228175489 has 2 divisors, whose sum is σ = 228175490. Its totient is φ = 228175488.

The previous prime is 228175487. The next prime is 228175529. The reversal of 228175489 is 984571822.

228175489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212926464 + 15249025 = 14592^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 228175489 - 2¹ = 228175487 is a prime.

Together with 228175487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228175481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114087744 + 114087745.

It is an arithmetic number, because the mean of its divisors is an integer number (114087745).

Almost surely, 2^228175489 is an apocalyptic number.

It is an amenable number.

228175489 is a deficient number, since it is larger than the sum of its proper divisors (1).

228175489 is an equidigital number, since it uses as much as digits as its factorization.

228175489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 228175489 is about 15105.4787742726. The cubic root of 228175489 is about 611.0681714316.

The spelling of 228175489 in words is "two hundred twenty-eight million, one hundred seventy-five thousand, four hundred eighty-nine".