5581843 has 2 divisors, whose sum is σ = 5581844. Its totient is φ = 5581842.

The previous prime is 5581841. The next prime is 5581853. The reversal of 5581843 is 3481855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5581843 - 2¹ = 5581841 is a prime.

Together with 5581841, it forms a pair of twin primes.

5581843 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5581799 and 5581808.

It is not a weakly prime, because it can be changed into another prime (5581841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790921 + 2790922.

It is an arithmetic number, because the mean of its divisors is an integer number (2790922).

Almost surely, 2^5581843 is an apocalyptic number.

5581843 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581843 is an equidigital number, since it uses as much as digits as its factorization.

5581843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 34.

The square root of 5581843 is about 2362.5924320542. The cubic root of 5581843 is about 177.3886678688.

It can be divided in two parts, 558 and 1843, that added together give a 4-th power (2401 = 7⁴).

The spelling of 5581843 in words is "five million, five hundred eighty-one thousand, eight hundred forty-three".