5681543 has 4 divisors (see below), whose sum is σ = 6493200. Its totient is φ = 4869888.

The previous prime is 5681531. The next prime is 5681561. The reversal of 5681543 is 3451865.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5681543 - 2¹⁴ = 5665159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681503) 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, 405818 + ... + 405831.

It is an arithmetic number, because the mean of its divisors is an integer number (1623300).

Almost surely, 2^5681543 is an apocalyptic number.

5681543 is a deficient number, since it is larger than the sum of its proper divisors (811657).

5681543 is an equidigital number, since it uses as much as digits as its factorization.

5681543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811656.

The product of its digits is 14400, while the sum is 32.

The square root of 5681543 is about 2383.5987497899. The cubic root of 5681543 is about 178.4385830704.

The spelling of 5681543 in words is "five million, six hundred eighty-one thousand, five hundred forty-three".