5581139 has 4 divisors (see below), whose sum is σ = 5586000. Its totient is φ = 5576280.

The previous prime is 5581133. The next prime is 5581141. The reversal of 5581139 is 9311855.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5581139 - 2¹⁶ = 5515603 is a prime.

It is a super-2 number, since 2×5581139² = 62298225074642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5581133) 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, 362 + ... + 3360.

It is an arithmetic number, because the mean of its divisors is an integer number (1396500).

Almost surely, 2^5581139 is an apocalyptic number.

5581139 is a deficient number, since it is larger than the sum of its proper divisors (4861).

5581139 is a wasteful number, since it uses less digits than its factorization.

5581139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860.

The product of its digits is 5400, while the sum is 32.

The square root of 5581139 is about 2362.4434384764. The cubic root of 5581139 is about 177.3812099454.

The spelling of 5581139 in words is "five million, five hundred eighty-one thousand, one hundred thirty-nine".