82855771 has 8 divisors (see below), whose sum is σ = 84207600. Its totient is φ = 81514848.

The previous prime is 82855763. The next prime is 82855837. The reversal of 82855771 is 17755828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82855771 - 2³ = 82855763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82855571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13345 + ... + 18541.

It is an arithmetic number, because the mean of its divisors is an integer number (10525950).

Almost surely, 2^82855771 is an apocalyptic number.

82855771 is a deficient number, since it is larger than the sum of its proper divisors (1351829).

82855771 is a wasteful number, since it uses less digits than its factorization.

82855771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453.

The product of its digits is 156800, while the sum is 43.

The square root of 82855771 is about 9102.5145426964. The cubic root of 82855771 is about 435.9542551535.

The spelling of 82855771 in words is "eighty-two million, eight hundred fifty-five thousand, seven hundred seventy-one".