5143681 has 4 divisors (see below), whose sum is σ = 5152212. Its totient is φ = 5135152.

The previous prime is 5143669. The next prime is 5143687. The reversal of 5143681 is 1863415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 4161600 = 991^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 5143681 - 2¹⁵ = 5110913 is a prime.

It is a super-2 number, since 2×5143681² = 52914908459522, 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 (5143687) 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, 3286 + ... + 4591.

It is an arithmetic number, because the mean of its divisors is an integer number (1288053).

Almost surely, 2^5143681 is an apocalyptic number.

It is an amenable number.

5143681 is a deficient number, since it is larger than the sum of its proper divisors (8531).

5143681 is an equidigital number, since it uses as much as digits as its factorization.

5143681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530.

The product of its digits is 2880, while the sum is 28.

The square root of 5143681 is about 2267.9684742077. The cubic root of 5143681 is about 172.6200914084.

The spelling of 5143681 in words is "five million, one hundred forty-three thousand, six hundred eighty-one".