5081681 has 4 divisors (see below), whose sum is σ = 5543664. Its totient is φ = 4619700.

The previous prime is 5081677. The next prime is 5081707. The reversal of 5081681 is 1861805.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5081681 - 2² = 5081677 is a prime.

It is a super-2 number, since 2×5081681² = 51646963571522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5081081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230975 + ... + 230996.

It is an arithmetic number, because the mean of its divisors is an integer number (1385916).

Almost surely, 2^5081681 is an apocalyptic number.

It is an amenable number.

5081681 is a deficient number, since it is larger than the sum of its proper divisors (461983).

5081681 is a wasteful number, since it uses less digits than its factorization.

5081681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461982.

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

The square root of 5081681 is about 2254.2584146455. The cubic root of 5081681 is about 171.9237200066.

The spelling of 5081681 in words is "five million, eighty-one thousand, six hundred eighty-one".