228456497 has 2 divisors, whose sum is σ = 228456498. Its totient is φ = 228456496.

The previous prime is 228456467. The next prime is 228456499. The reversal of 228456497 is 794654822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164839921 + 63616576 = 12839^2 + 7976^2 .

It is a cyclic number.

It is not a de Polignac number, because 228456497 - 2⁶ = 228456433 is a prime.

It is a super-2 number, since 2×228456497² = 104384742043022018, which contains 22 as substring.

Together with 228456499, 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 (228456499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114228248 + 114228249.

It is an arithmetic number, because the mean of its divisors is an integer number (114228249).

Almost surely, 2^228456497 is an apocalyptic number.

It is an amenable number.

228456497 is a deficient number, since it is larger than the sum of its proper divisors (1).

228456497 is an equidigital number, since it uses as much as digits as its factorization.

228456497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The square root of 228456497 is about 15114.7774379909. Note that the first 3 decimals coincide. The cubic root of 228456497 is about 611.3189208324.

The spelling of 228456497 in words is "two hundred twenty-eight million, four hundred fifty-six thousand, four hundred ninety-seven".