82882561 has 4 divisors (see below), whose sum is σ = 85556224. Its totient is φ = 80208900.

The previous prime is 82882559. The next prime is 82882589. The reversal of 82882561 is 16528828.

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 82882561 - 2¹ = 82882559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82882511) 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, 1336785 + ... + 1336846.

It is an arithmetic number, because the mean of its divisors is an integer number (21389056).

Almost surely, 2^82882561 is an apocalyptic number.

It is an amenable number.

82882561 is a deficient number, since it is larger than the sum of its proper divisors (2673663).

82882561 is a wasteful number, since it uses less digits than its factorization.

82882561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673662.

The product of its digits is 61440, while the sum is 40.

The square root of 82882561 is about 9103.9859951562. The cubic root of 82882561 is about 436.0012362140.

The spelling of 82882561 in words is "eighty-two million, eight hundred eighty-two thousand, five hundred sixty-one".