81056596 has 24 divisors (see below), whose sum is σ = 143589600. Its totient is φ = 40034592.

The previous prime is 81056581. The next prime is 81056609. The reversal of 81056596 is 69565018.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182751 + ... + 183193.

It is an arithmetic number, because the mean of its divisors is an integer number (5982900).

Almost surely, 2^81056596 is an apocalyptic number.

It is an amenable number.

81056596 is a deficient number, since it is larger than the sum of its proper divisors (62533004).

81056596 is a wasteful number, since it uses less digits than its factorization.

81056596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 81056596 is about 9003.1436731844. The cubic root of 81056596 is about 432.7756199231.

The spelling of 81056596 in words is "eighty-one million, fifty-six thousand, five hundred ninety-six".