145528241 has 2 divisors, whose sum is σ = 145528242. Its totient is φ = 145528240.

The previous prime is 145528237. The next prime is 145528247. The reversal of 145528241 is 142825541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92544400 + 52983841 = 9620^2 + 7279^2 .

It is a cyclic number.

It is not a de Polignac number, because 145528241 - 2² = 145528237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145528198 and 145528207.

It is not a weakly prime, because it can be changed into another prime (145528247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72764120 + 72764121.

It is an arithmetic number, because the mean of its divisors is an integer number (72764121).

Almost surely, 2^145528241 is an apocalyptic number.

It is an amenable number.

145528241 is a deficient number, since it is larger than the sum of its proper divisors (1).

145528241 is an equidigital number, since it uses as much as digits as its factorization.

145528241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 32.

The square root of 145528241 is about 12063.5086521294. The cubic root of 145528241 is about 525.9959820326.

It can be divided in two parts, 14 and 5528241, that added together give a palindrome (5528255).

The spelling of 145528241 in words is "one hundred forty-five million, five hundred twenty-eight thousand, two hundred forty-one".