8051681 has 16 divisors (see below), whose sum is σ = 9178368. Its totient is φ = 6998400.

The previous prime is 8051677. The next prime is 8051713. The reversal of 8051681 is 1861508.

It is a cyclic number.

It is not a de Polignac number, because 8051681 - 2² = 8051677 is a prime.

It is a super-2 number, since 2×8051681² = 129659133851522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8051651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29576 + ... + 29846.

It is an arithmetic number, because the mean of its divisors is an integer number (573648).

Almost surely, 2^8051681 is an apocalyptic number.

It is an amenable number.

8051681 is a deficient number, since it is larger than the sum of its proper divisors (1126687).

8051681 is a wasteful number, since it uses less digits than its factorization.

8051681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 8051681 is about 2837.5484136839. The cubic root of 8051681 is about 200.4297509094.

The spelling of 8051681 in words is "eight million, fifty-one thousand, six hundred eighty-one".