45643445 has 4 divisors (see below), whose sum is σ = 54772140. Its totient is φ = 36514752.

The previous prime is 45643427. The next prime is 45643471. The reversal of 45643445 is 54434654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30096196 + 15547249 = 5486^2 + 3943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45643445 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564340 + ... + 4564349.

It is an arithmetic number, because the mean of its divisors is an integer number (13693035).

Almost surely, 2^45643445 is an apocalyptic number.

It is an amenable number.

45643445 is a deficient number, since it is larger than the sum of its proper divisors (9128695).

45643445 is an equidigital number, since it uses as much as digits as its factorization.

45643445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9128694.

The product of its digits is 115200, while the sum is 35.

The square root of 45643445 is about 6755.9932652424. The cubic root of 45643445 is about 357.3766213206.

The spelling of 45643445 in words is "forty-five million, six hundred forty-three thousand, four hundred forty-five".