5509881 has 12 divisors (see below), whose sum is σ = 8571108. Its totient is φ = 3390624.

The previous prime is 5509873. The next prime is 5509883. The reversal of 5509881 is 1889055.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 1742400 = 1941^2 + 1320^2 .

It is not a de Polignac number, because 5509881 - 2³ = 5509873 is a prime.

It is a super-2 number, since 2×5509881² = 60717577268322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5509883) 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 11 ways as a sum of consecutive naturals, for example, 23430 + ... + 23663.

It is an arithmetic number, because the mean of its divisors is an integer number (714259).

Almost surely, 2^5509881 is an apocalyptic number.

It is an amenable number.

5509881 is a deficient number, since it is larger than the sum of its proper divisors (3061227).

5509881 is a wasteful number, since it uses less digits than its factorization.

5509881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47112 (or 47109 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 5509881 is about 2347.3135708720. The cubic root of 5509881 is about 176.6230607144.

The spelling of 5509881 in words is "five million, five hundred nine thousand, eight hundred eighty-one".