5581011 has 4 divisors (see below), whose sum is σ = 7441352. Its totient is φ = 3720672.

The previous prime is 5581001. The next prime is 5581027. The reversal of 5581011 is 1101855.

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

It is not a de Polignac number, because 5581011 - 2⁵ = 5580979 is a prime.

It is a super-2 number, since 2×5581011² = 62295367564242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

5581011 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5581001) 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, 930166 + ... + 930171.

It is an arithmetic number, because the mean of its divisors is an integer number (1860338).

Almost surely, 2^5581011 is an apocalyptic number.

5581011 is a deficient number, since it is larger than the sum of its proper divisors (1860341).

5581011 is a wasteful number, since it uses less digits than its factorization.

5581011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860340.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 5581011 is about 2362.4163477254. The cubic root of 5581011 is about 177.3798538920.

Adding to 5581011 its reverse (1101855), we get a palindrome (6682866).

The spelling of 5581011 in words is "five million, five hundred eighty-one thousand, eleven".