45128147 has 8 divisors (see below), whose sum is σ = 46799040. Its totient is φ = 43464960.

The previous prime is 45128129. The next prime is 45128189. The reversal of 45128147 is 74182154.

It is a happy number.

45128147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45128147 - 2⁸ = 45127891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45128107) 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 in 7 ways as a sum of consecutive naturals, for example, 11747 + ... + 15107.

It is an arithmetic number, because the mean of its divisors is an integer number (5849880).

Almost surely, 2^45128147 is an apocalyptic number.

45128147 is a deficient number, since it is larger than the sum of its proper divisors (1670893).

45128147 is a wasteful number, since it uses less digits than its factorization.

45128147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its digits is 8960, while the sum is 32.

The square root of 45128147 is about 6717.7486556137. The cubic root of 45128147 is about 356.0266439470.

The spelling of 45128147 in words is "forty-five million, one hundred twenty-eight thousand, one hundred forty-seven".