228875291 has 2 divisors, whose sum is σ = 228875292. Its totient is φ = 228875290.

The previous prime is 228875281. The next prime is 228875321. The reversal of 228875291 is 192578822.

228875291 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 is a cyclic number.

It is not a de Polignac number, because 228875291 - 2²² = 224680987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228875281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114437645 + 114437646.

It is an arithmetic number, because the mean of its divisors is an integer number (114437646).

Almost surely, 2^228875291 is an apocalyptic number.

228875291 is a deficient number, since it is larger than the sum of its proper divisors (1).

228875291 is an equidigital number, since it uses as much as digits as its factorization.

228875291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 228875291 is about 15128.6248879401. The cubic root of 228875291 is about 611.6922383203.

The spelling of 228875291 in words is "two hundred twenty-eight million, eight hundred seventy-five thousand, two hundred ninety-one".