82561596 has 24 divisors (see below), whose sum is σ = 207462864. Its totient is φ = 25403520.

The previous prime is 82561561. The next prime is 82561643. The reversal of 82561596 is 69516528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264465 + ... + 264776.

It is an arithmetic number, because the mean of its divisors is an integer number (8644286).

Almost surely, 2^82561596 is an apocalyptic number.

It is an amenable number.

82561596 is an abundant number, since it is smaller than the sum of its proper divisors (124901268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82561596 is a wasteful number, since it uses less digits than its factorization.

82561596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529261 (or 529259 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 82561596 is about 9086.3411778339. The cubic root of 82561596 is about 435.4376992178.

The spelling of 82561596 in words is "eighty-two million, five hundred sixty-one thousand, five hundred ninety-six".