228826561 has 2 divisors, whose sum is σ = 228826562. Its totient is φ = 228826560.

The previous prime is 228826541. The next prime is 228826583. The reversal of 228826561 is 165628822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222576561 + 6250000 = 14919^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 228826561 - 2⁵ = 228826529 is a prime.

It is not a weakly prime, because it can be changed into another prime (228826541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114413280 + 114413281.

It is an arithmetic number, because the mean of its divisors is an integer number (114413281).

Almost surely, 2^228826561 is an apocalyptic number.

It is an amenable number.

228826561 is a deficient number, since it is larger than the sum of its proper divisors (1).

228826561 is an equidigital number, since it uses as much as digits as its factorization.

228826561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 228826561 is about 15127.0142790969. The cubic root of 228826561 is about 611.6488232967.

The spelling of 228826561 in words is "two hundred twenty-eight million, eight hundred twenty-six thousand, five hundred sixty-one".