228519001 has 2 divisors, whose sum is σ = 228519002. Its totient is φ = 228519000.

The previous prime is 228518971. The next prime is 228519017. The reversal of 228519001 is 100915822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227255625 + 1263376 = 15075^2 + 1124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228519001 is a prime.

It is not a weakly prime, because it can be changed into another prime (228519041) 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, 114259500 + 114259501.

It is an arithmetic number, because the mean of its divisors is an integer number (114259501).

Almost surely, 2^228519001 is an apocalyptic number.

It is an amenable number.

228519001 is a deficient number, since it is larger than the sum of its proper divisors (1).

228519001 is an equidigital number, since it uses as much as digits as its factorization.

228519001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 228519001 is about 15116.8449419844. The cubic root of 228519001 is about 611.3746665203.

The spelling of 228519001 in words is "two hundred twenty-eight million, five hundred nineteen thousand, one".