45329281 has 2 divisors, whose sum is σ = 45329282. Its totient is φ = 45329280.

The previous prime is 45329279. The next prime is 45329299. The reversal of 45329281 is 18292354.

45329281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 4879681 = 6360^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 45329281 - 2¹ = 45329279 is a prime.

It is a super-2 number, since 2×45329281² = 4109487431953922, which contains 22 as substring.

Together with 45329279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45329261) 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, 22664640 + 22664641.

It is an arithmetic number, because the mean of its divisors is an integer number (22664641).

Almost surely, 2^45329281 is an apocalyptic number.

It is an amenable number.

45329281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45329281 is an equidigital number, since it uses as much as digits as its factorization.

45329281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 45329281 is about 6732.7023549241. The cubic root of 45329281 is about 356.5547913401.

The spelling of 45329281 in words is "forty-five million, three hundred twenty-nine thousand, two hundred eighty-one".