45456643 has 2 divisors, whose sum is σ = 45456644. Its totient is φ = 45456642.

The previous prime is 45456641. The next prime is 45456647. The reversal of 45456643 is 34665454.

45456643 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 is a cyclic number.

It is not a de Polignac number, because 45456643 - 2¹ = 45456641 is a prime.

Together with 45456641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45456641) 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, 22728321 + 22728322.

It is an arithmetic number, because the mean of its divisors is an integer number (22728322).

Almost surely, 2^45456643 is an apocalyptic number.

45456643 is a deficient number, since it is larger than the sum of its proper divisors (1).

45456643 is an equidigital number, since it uses as much as digits as its factorization.

45456643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 37.

The square root of 45456643 is about 6742.1541809721. The cubic root of 45456643 is about 356.8884172406. Note that the first 3 decimals are identical.

The spelling of 45456643 in words is "forty-five million, four hundred fifty-six thousand, six hundred forty-three".