45047147 has 2 divisors, whose sum is σ = 45047148. Its totient is φ = 45047146.

The previous prime is 45047141. The next prime is 45047201. The reversal of 45047147 is 74174054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45047147 - 2⁴ = 45047131 is a prime.

It is not a weakly prime, because it can be changed into another prime (45047141) 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, 22523573 + 22523574.

It is an arithmetic number, because the mean of its divisors is an integer number (22523574).

Almost surely, 2^45047147 is an apocalyptic number.

45047147 is a deficient number, since it is larger than the sum of its proper divisors (1).

45047147 is an equidigital number, since it uses as much as digits as its factorization.

45047147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 45047147 is about 6711.7171424308. The cubic root of 45047147 is about 355.8135069799.

The spelling of 45047147 in words is "forty-five million, forty-seven thousand, one hundred forty-seven".