82321057 has 8 divisors (see below), whose sum is σ = 101318336. Its totient is φ = 65133072.

The previous prime is 82321039. The next prime is 82321061. The reversal of 82321057 is 75012328.

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 82321057 - 2⁷ = 82320929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82321037) 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, 452223 + ... + 452404.

It is an arithmetic number, because the mean of its divisors is an integer number (12664792).

Almost surely, 2^82321057 is an apocalyptic number.

It is an amenable number.

82321057 is a deficient number, since it is larger than the sum of its proper divisors (18997279).

82321057 is a wasteful number, since it uses less digits than its factorization.

82321057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904647.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 82321057 is about 9073.0952270986. The cubic root of 82321057 is about 435.0144126990.

The spelling of 82321057 in words is "eighty-two million, three hundred twenty-one thousand, fifty-seven".