228035261 has 2 divisors, whose sum is σ = 228035262. Its totient is φ = 228035260.

The previous prime is 228035251. The next prime is 228035281. The reversal of 228035261 is 162530822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225570361 + 2464900 = 15019^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 228035261 - 2¹⁰ = 228034237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228035221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114017630 + 114017631.

It is an arithmetic number, because the mean of its divisors is an integer number (114017631).

Almost surely, 2^228035261 is an apocalyptic number.

It is an amenable number.

228035261 is a deficient number, since it is larger than the sum of its proper divisors (1).

228035261 is an equidigital number, since it uses as much as digits as its factorization.

228035261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 228035261 is about 15100.8364337874. The cubic root of 228035261 is about 610.9429660066.

The spelling of 228035261 in words is "two hundred twenty-eight million, thirty-five thousand, two hundred sixty-one".