228484561 has 2 divisors, whose sum is σ = 228484562. Its totient is φ = 228484560.

The previous prime is 228484549. The next prime is 228484577. The reversal of 228484561 is 165484822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160174336 + 68310225 = 12656^2 + 8265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228484561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228484541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114242280 + 114242281.

It is an arithmetic number, because the mean of its divisors is an integer number (114242281).

Almost surely, 2^228484561 is an apocalyptic number.

It is an amenable number.

228484561 is a deficient number, since it is larger than the sum of its proper divisors (1).

228484561 is an equidigital number, since it uses as much as digits as its factorization.

228484561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 40.

The square root of 228484561 is about 15115.7057724739. The cubic root of 228484561 is about 611.3439516398.

The spelling of 228484561 in words is "two hundred twenty-eight million, four hundred eighty-four thousand, five hundred sixty-one".