5581723 has 4 divisors (see below), whose sum is σ = 6379120. Its totient is φ = 4784328.

The previous prime is 5581711. The next prime is 5581727. The reversal of 5581723 is 3271855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3271855 = 5 ⋅654371.

It is a cyclic number.

It is not a de Polignac number, because 5581723 - 2⁵ = 5581691 is a prime.

It is a Duffinian number.

5581723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5581727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398688 + ... + 398701.

It is an arithmetic number, because the mean of its divisors is an integer number (1594780).

Almost surely, 2^5581723 is an apocalyptic number.

5581723 is a deficient number, since it is larger than the sum of its proper divisors (797397).

5581723 is an equidigital number, since it uses as much as digits as its factorization.

5581723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797396.

The product of its digits is 8400, while the sum is 31.

The square root of 5581723 is about 2362.5670360860. The cubic root of 5581723 is about 177.3873966762.

The spelling of 5581723 in words is "five million, five hundred eighty-one thousand, seven hundred twenty-three".