5011681 has 4 divisors (see below), whose sum is σ = 5075200. Its totient is φ = 4948164.

The previous prime is 5011661. The next prime is 5011729. The reversal of 5011681 is 1861105.

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 5011681 - 2¹⁹ = 4487393 is a prime.

It is a super-2 number, since 2×5011681² = 50233892891522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5011621) 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 3 ways as a sum of consecutive naturals, for example, 31641 + ... + 31798.

It is an arithmetic number, because the mean of its divisors is an integer number (1268800).

Almost surely, 2^5011681 is an apocalyptic number.

It is an amenable number.

5011681 is a deficient number, since it is larger than the sum of its proper divisors (63519).

5011681 is an equidigital number, since it uses as much as digits as its factorization.

5011681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63518.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 5011681 is about 2238.6784047737. The cubic root of 5011681 is about 171.1306526316.

Adding to 5011681 its reverse (1861105), we get a palindrome (6872786).

The spelling of 5011681 in words is "five million, eleven thousand, six hundred eighty-one".