82842557 has 4 divisors (see below), whose sum is σ = 94677216. Its totient is φ = 71007900.

The previous prime is 82842499. The next prime is 82842563. The reversal of 82842557 is 75524828.

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 82842557 - 2⁸ = 82842301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82842577) 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, 5917319 + ... + 5917332.

It is an arithmetic number, because the mean of its divisors is an integer number (23669304).

Almost surely, 2^82842557 is an apocalyptic number.

It is an amenable number.

82842557 is a deficient number, since it is larger than the sum of its proper divisors (11834659).

82842557 is a wasteful number, since it uses less digits than its factorization.

82842557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11834658.

The product of its digits is 179200, while the sum is 41.

The square root of 82842557 is about 9101.7886703658. The cubic root of 82842557 is about 435.9310783097.

The spelling of 82842557 in words is "eighty-two million, eight hundred forty-two thousand, five hundred fifty-seven".