82257566 has 8 divisors (see below), whose sum is σ = 123506904. Its totient is φ = 41088600.

The previous prime is 82257563. The next prime is 82257583. The reversal of 82257566 is 66575228.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82257563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17465 + ... + 21668.

It is an arithmetic number, because the mean of its divisors is an integer number (15438363).

Almost surely, 2^82257566 is an apocalyptic number.

82257566 is a deficient number, since it is larger than the sum of its proper divisors (41249338).

82257566 is a wasteful number, since it uses less digits than its factorization.

82257566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40186.

The product of its digits is 201600, while the sum is 41.

The square root of 82257566 is about 9069.5956910989. The cubic root of 82257566 is about 434.9025474212.

The spelling of 82257566 in words is "eighty-two million, two hundred fifty-seven thousand, five hundred sixty-six".