82443573 has 12 divisors (see below), whose sum is σ = 120265548. Its totient is φ = 54417600.

The previous prime is 82443553. The next prime is 82443577. The reversal of 82443573 is 37534428.

It is a happy number.

82443573 is a `hidden beast` number, since 82 + 4 + 4 + 3 + 573 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 78535044 + 3908529 = 8862^2 + 1977^2 .

It is a de Polignac number, because none of the positive numbers 2^k-82443573 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82443577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44440 + ... + 46257.

It is an arithmetic number, because the mean of its divisors is an integer number (10022129).

Almost surely, 2^82443573 is an apocalyptic number.

It is an amenable number.

82443573 is a deficient number, since it is larger than the sum of its proper divisors (37821975).

82443573 is a wasteful number, since it uses less digits than its factorization.

82443573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90804 (or 90801 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 82443573 is about 9079.8443268594. The cubic root of 82443573 is about 435.2301120994.

The spelling of 82443573 in words is "eighty-two million, four hundred forty-three thousand, five hundred seventy-three".