228145051 has 2 divisors, whose sum is σ = 228145052. Its totient is φ = 228145050.

The previous prime is 228145031. The next prime is 228145061. The reversal of 228145051 is 150541822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228145051 is a prime.

It is equal to p_12546136 and since 228145051 and 12546136 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (228145031) 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, 114072525 + 114072526.

It is an arithmetic number, because the mean of its divisors is an integer number (114072526).

Almost surely, 2^228145051 is an apocalyptic number.

228145051 is a deficient number, since it is larger than the sum of its proper divisors (1).

228145051 is an equidigital number, since it uses as much as digits as its factorization.

228145051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 228145051 is about 15104.4712254352. The cubic root of 228145051 is about 611.0409986034.

Adding to 228145051 its reverse (150541822), we get a palindrome (378686873).

The spelling of 228145051 in words is "two hundred twenty-eight million, one hundred forty-five thousand, fifty-one".