45128647 has 2 divisors, whose sum is σ = 45128648. Its totient is φ = 45128646.

The previous prime is 45128639. The next prime is 45128663. The reversal of 45128647 is 74682154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45128647 - 2³ = 45128639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45128617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22564323 + 22564324.

It is an arithmetic number, because the mean of its divisors is an integer number (22564324).

Almost surely, 2^45128647 is an apocalyptic number.

45128647 is a deficient number, since it is larger than the sum of its proper divisors (1).

45128647 is an equidigital number, since it uses as much as digits as its factorization.

45128647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 45128647 is about 6717.7858703594. The cubic root of 45128647 is about 356.0279588150.

The spelling of 45128647 in words is "forty-five million, one hundred twenty-eight thousand, six hundred forty-seven".