228145061 has 2 divisors, whose sum is σ = 228145062. Its totient is φ = 228145060.

The previous prime is 228145051. The next prime is 228145091. The reversal of 228145061 is 160541822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203205025 + 24940036 = 14255^2 + 4994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228145061 is a prime.

It is a Chen prime.

It is equal to p_12546137 and since 228145061 and 12546137 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228145031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114072530 + 114072531.

It is an arithmetic number, because the mean of its divisors is an integer number (114072531).

Almost surely, 2^228145061 is an apocalyptic number.

It is an amenable number.

228145061 is a deficient number, since it is larger than the sum of its proper divisors (1).

228145061 is an equidigital number, since it uses as much as digits as its factorization.

228145061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 228145061 is about 15104.4715564630. The cubic root of 228145061 is about 611.0410075311.

Adding to 228145061 its reverse (160541822), we get a palindrome (388686883).

The spelling of 228145061 in words is "two hundred twenty-eight million, one hundred forty-five thousand, sixty-one".