83443573 has 4 divisors (see below), whose sum is σ = 87835360. Its totient is φ = 79051788.

The previous prime is 83443561. The next prime is 83443579. The reversal of 83443573 is 37534438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83443573 - 2⁵ = 83443541 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 (83443579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195865 + ... + 2195902.

It is an arithmetic number, because the mean of its divisors is an integer number (21958840).

Almost surely, 2^83443573 is an apocalyptic number.

It is an amenable number.

83443573 is a deficient number, since it is larger than the sum of its proper divisors (4391787).

83443573 is a wasteful number, since it uses less digits than its factorization.

83443573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391786.

The product of its digits is 120960, while the sum is 37.

The square root of 83443573 is about 9134.7453713828. The cubic root of 83443573 is about 436.9827539375.

The spelling of 83443573 in words is "eighty-three million, four hundred forty-three thousand, five hundred seventy-three".