228675521 has 2 divisors, whose sum is σ = 228675522. Its totient is φ = 228675520.

The previous prime is 228675511. The next prime is 228675547. The reversal of 228675521 is 125576822.

228675521 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., 202777600 + 25897921 = 14240^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 228675521 - 2²² = 224481217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228675511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114337760 + 114337761.

It is an arithmetic number, because the mean of its divisors is an integer number (114337761).

Almost surely, 2^228675521 is an apocalyptic number.

It is an amenable number.

228675521 is a deficient number, since it is larger than the sum of its proper divisors (1).

228675521 is an equidigital number, since it uses as much as digits as its factorization.

228675521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 228675521 is about 15122.0210620142. The cubic root of 228675521 is about 611.5142180427.

The spelling of 228675521 in words is "two hundred twenty-eight million, six hundred seventy-five thousand, five hundred twenty-one".