228218057 has 2 divisors, whose sum is σ = 228218058. Its totient is φ = 228218056.

The previous prime is 228218051. The next prime is 228218059. The reversal of 228218057 is 750812822.

228218057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140683321 + 87534736 = 11861^2 + 9356^2 .

It is a cyclic number.

It is not a de Polignac number, because 228218057 - 2¹⁸ = 227955913 is a prime.

Together with 228218059, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (228218051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114109028 + 114109029.

It is an arithmetic number, because the mean of its divisors is an integer number (114109029).

Almost surely, 2^228218057 is an apocalyptic number.

It is an amenable number.

228218057 is a deficient number, since it is larger than the sum of its proper divisors (1).

228218057 is an equidigital number, since it uses as much as digits as its factorization.

228218057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 228218057 is about 15106.8877337458. The cubic root of 228218057 is about 611.1061689873.

The spelling of 228218057 in words is "two hundred twenty-eight million, two hundred eighteen thousand, fifty-seven".