228275137 has 2 divisors, whose sum is σ = 228275138. Its totient is φ = 228275136.

The previous prime is 228275107. The next prime is 228275141. The reversal of 228275137 is 731572822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192765456 + 35509681 = 13884^2 + 5959^2 .

It is a cyclic number.

It is not a de Polignac number, because 228275137 - 2⁷ = 228275009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228275096 and 228275105.

It is not a weakly prime, because it can be changed into another prime (228275107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114137568 + 114137569.

It is an arithmetic number, because the mean of its divisors is an integer number (114137569).

Almost surely, 2^228275137 is an apocalyptic number.

It is an amenable number.

228275137 is a deficient number, since it is larger than the sum of its proper divisors (1).

228275137 is an equidigital number, since it uses as much as digits as its factorization.

228275137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 228275137 is about 15108.7768201135. The cubic root of 228275137 is about 611.1571130023.

The spelling of 228275137 in words is "two hundred twenty-eight million, two hundred seventy-five thousand, one hundred thirty-seven".