5509494881 has 4 divisors (see below), whose sum is σ = 6010358064. Its totient is φ = 5008631700.

The previous prime is 5509494877. The next prime is 5509494899. The reversal of 5509494881 is 1884949055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5509494881 - 2² = 5509494877 is a prime.

It is a super-2 number, since 2×5509494881² = 60709067687530408322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5509424881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250431575 + ... + 250431596.

It is an arithmetic number, because the mean of its divisors is an integer number (1502589516).

Almost surely, 2^5509494881 is an apocalyptic number.

It is an amenable number.

5509494881 is a deficient number, since it is larger than the sum of its proper divisors (500863183).

5509494881 is a wasteful number, since it uses less digits than its factorization.

5509494881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500863182.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The square root of 5509494881 is about 74225.9717417024. The cubic root of 5509494881 is about 1766.1893484715.

The spelling of 5509494881 in words is "five billion, five hundred nine million, four hundred ninety-four thousand, eight hundred eighty-one".