145255322321 has 2 divisors, whose sum is σ = 145255322322. Its totient is φ = 145255322320.

The previous prime is 145255322273. The next prime is 145255322347. The reversal of 145255322321 is 123223552541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137445181696 + 7810140625 = 370736^2 + 88375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145255322321 is a prime.

It is not a weakly prime, because it can be changed into another prime (145255322921) 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, 72627661160 + 72627661161.

It is an arithmetic number, because the mean of its divisors is an integer number (72627661161).

Almost surely, 2^145255322321 is an apocalyptic number.

It is an amenable number.

145255322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

145255322321 is an equidigital number, since it uses as much as digits as its factorization.

145255322321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 35.

Adding to 145255322321 its reverse (123223552541), we get a palindrome (268478874862).

The spelling of 145255322321 in words is "one hundred forty-five billion, two hundred fifty-five million, three hundred twenty-two thousand, three hundred twenty-one".