10000081 has 8 divisors (see below), whose sum is σ = 12307904. Its totient is φ = 7912080.

The previous prime is 10000079. The next prime is 10000103. The reversal of 10000081 is 18000001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10000081 - 2¹ = 10000079 is a prime.

It is a super-2 number, since 2×10000081² = 200003240013122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10000481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54855 + ... + 55036.

It is an arithmetic number, because the mean of its divisors is an integer number (1538488).

Almost surely, 2^10000081 is an apocalyptic number.

It is an amenable number.

10000081 is a deficient number, since it is larger than the sum of its proper divisors (2307823).

10000081 is a wasteful number, since it uses less digits than its factorization.

10000081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109911.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 10000081 is about 3162.2904673670. The cubic root of 10000081 is about 215.4440506990. Note that the first 3 decimals are identical.

Adding to 10000081 its reverse (18000001), we get a palindrome (28000082).

The spelling of 10000081 in words is "ten million, eighty-one", and thus it is an aban number and an uban number.