228165601 has 2 divisors, whose sum is σ = 228165602. Its totient is φ = 228165600.

The previous prime is 228165593. The next prime is 228165617. The reversal of 228165601 is 106561822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215384976 + 12780625 = 14676^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 228165601 - 2³ = 228165593 is a prime.

It is not a weakly prime, because it can be changed into another prime (228165701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114082800 + 114082801.

It is an arithmetic number, because the mean of its divisors is an integer number (114082801).

Almost surely, 2^228165601 is an apocalyptic number.

It is an amenable number.

228165601 is a deficient number, since it is larger than the sum of its proper divisors (1).

228165601 is an equidigital number, since it uses as much as digits as its factorization.

228165601 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 31.

The square root of 228165601 is about 15105.1514722627. The cubic root of 228165601 is about 611.0593444108.

The spelling of 228165601 in words is "two hundred twenty-eight million, one hundred sixty-five thousand, six hundred one".