5550049991 has 4 divisors (see below), whose sum is σ = 5550799752. Its totient is φ = 5549300232.

The previous prime is 5550049969. The next prime is 5550050069. The reversal of 5550049991 is 1999400555.

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

It is a cyclic number.

It is not a de Polignac number, because 5550049991 - 2¹⁰ = 5550048967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5550049391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363665 + ... + 378618.

It is an arithmetic number, because the mean of its divisors is an integer number (1387699938).

Almost surely, 2^5550049991 is an apocalyptic number.

5550049991 is a deficient number, since it is larger than the sum of its proper divisors (749761).

5550049991 is an equidigital number, since it uses as much as digits as its factorization.

5550049991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749760.

The product of its (nonzero) digits is 364500, while the sum is 47.

The square root of 5550049991 is about 74498.6576456247. The cubic root of 5550049991 is about 1770.5123683996.

The spelling of 5550049991 in words is "five billion, five hundred fifty million, forty-nine thousand, nine hundred ninety-one".