5505811989 has 8 divisors (see below), whose sum is σ = 7342506432. Its totient is φ = 3669829440.

The previous prime is 5505811957. The next prime is 5505811991. The reversal of 5505811989 is 9891185055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5505811989 - 2⁵ = 5505811957 is a prime.

It is a super-2 number, since 2×5505811989² = 60627931316432272242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5505811919) 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 7 ways as a sum of consecutive naturals, for example, 159657 + ... + 191054.

It is an arithmetic number, because the mean of its divisors is an integer number (917813304).

Almost surely, 2^5505811989 is an apocalyptic number.

It is an amenable number.

5505811989 is a deficient number, since it is larger than the sum of its proper divisors (1836694443).

5505811989 is a wasteful number, since it uses less digits than its factorization.

5505811989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355947.

The product of its (nonzero) digits is 648000, while the sum is 51.

The square root of 5505811989 is about 74201.1589464747. The cubic root of 5505811989 is about 1765.7957168301.

The spelling of 5505811989 in words is "five billion, five hundred five million, eight hundred eleven thousand, nine hundred eighty-nine".