82322257 has 4 divisors (see below), whose sum is σ = 82403136. Its totient is φ = 82241380.

The previous prime is 82322249. The next prime is 82322281. The reversal of 82322257 is 75222328.

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 82322257 - 2³ = 82322249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82322657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38893 + ... + 40954.

It is an arithmetic number, because the mean of its divisors is an integer number (20600784).

Almost surely, 2^82322257 is an apocalyptic number.

It is an amenable number.

82322257 is a deficient number, since it is larger than the sum of its proper divisors (80879).

82322257 is a wasteful number, since it uses less digits than its factorization.

82322257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80878.

The product of its digits is 13440, while the sum is 31.

The square root of 82322257 is about 9073.1613564402. The cubic root of 82322257 is about 435.0165264343.

The spelling of 82322257 in words is "eighty-two million, three hundred twenty-two thousand, two hundred fifty-seven".