82538845 has 4 divisors (see below), whose sum is σ = 99046620. Its totient is φ = 66031072.

The previous prime is 82538809. The next prime is 82538851. The reversal of 82538845 is 54883528.

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 9897316 + 72641529 = 3146^2 + 8523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82538845 is a prime.

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, 8253880 + ... + 8253889.

It is an arithmetic number, because the mean of its divisors is an integer number (24761655).

Almost surely, 2^82538845 is an apocalyptic number.

It is an amenable number.

82538845 is a deficient number, since it is larger than the sum of its proper divisors (16507775).

82538845 is a wasteful number, since it uses less digits than its factorization.

82538845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507774.

The product of its digits is 307200, while the sum is 43.

The square root of 82538845 is about 9085.0891575152. The cubic root of 82538845 is about 435.3976985650.

The spelling of 82538845 in words is "eighty-two million, five hundred thirty-eight thousand, eight hundred forty-five".