82792257 has 4 divisors (see below), whose sum is σ = 110389680. Its totient is φ = 55194836.

The previous prime is 82792247. The next prime is 82792277. The reversal of 82792257 is 75229728.

It is a happy number.

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 82792257 - 2¹¹ = 82790209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82792247) 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, 13798707 + ... + 13798712.

It is an arithmetic number, because the mean of its divisors is an integer number (27597420).

Almost surely, 2^82792257 is an apocalyptic number.

It is an amenable number.

82792257 is a deficient number, since it is larger than the sum of its proper divisors (27597423).

82792257 is a wasteful number, since it uses less digits than its factorization.

82792257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27597422.

The product of its digits is 141120, while the sum is 42.

The square root of 82792257 is about 9099.0250576641. The cubic root of 82792257 is about 435.8428315057.

The spelling of 82792257 in words is "eighty-two million, seven hundred ninety-two thousand, two hundred fifty-seven".