43345573 has 4 divisors (see below), whose sum is σ = 44163468. Its totient is φ = 42527680.

The previous prime is 43345559. The next prime is 43345579. The reversal of 43345573 is 37554334.

43345573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39413284 + 3932289 = 6278^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 43345573 - 2²¹ = 41248421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43345579) 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 3 ways as a sum of consecutive naturals, for example, 408868 + ... + 408973.

It is an arithmetic number, because the mean of its divisors is an integer number (11040867).

Almost surely, 2^43345573 is an apocalyptic number.

It is an amenable number.

43345573 is a deficient number, since it is larger than the sum of its proper divisors (817895).

43345573 is an equidigital number, since it uses as much as digits as its factorization.

43345573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817894.

The product of its digits is 75600, while the sum is 34.

The square root of 43345573 is about 6583.7354898264. The cubic root of 43345573 is about 351.2758145185.

The spelling of 43345573 in words is "forty-three million, three hundred forty-five thousand, five hundred seventy-three".