81056060 has 12 divisors (see below), whose sum is σ = 170217768. Its totient is φ = 32422416.

The previous prime is 81056047. The next prime is 81056069. The reversal of 81056060 is 6065018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81056069) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2026382 + ... + 2026421.

It is an arithmetic number, because the mean of its divisors is an integer number (14184814).

Almost surely, 2^81056060 is an apocalyptic number.

It is an amenable number.

81056060 is an abundant number, since it is smaller than the sum of its proper divisors (89161708).

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

81056060 is a wasteful number, since it uses less digits than its factorization.

81056060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052812 (or 4052810 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 81056060 is about 9003.1139057551. The cubic root of 81056060 is about 432.7746659878.

The spelling of 81056060 in words is "eighty-one million, fifty-six thousand, sixty".