5055549991 has 8 divisors (see below), whose sum is σ = 5080872560. Its totient is φ = 5030278848.

The previous prime is 5055549953. The next prime is 5055550007. The reversal of 5055549991 is 1999455505.

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

It is a cyclic number.

It is not a de Polignac number, because 5055549991 - 2⁹ = 5055549479 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 (5055549791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192355 + ... + 217051.

It is an arithmetic number, because the mean of its divisors is an integer number (635109070).

Almost surely, 2^5055549991 is an apocalyptic number.

5055549991 is a deficient number, since it is larger than the sum of its proper divisors (25322569).

5055549991 is a wasteful number, since it uses less digits than its factorization.

5055549991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25713.

The product of its (nonzero) digits is 1822500, while the sum is 52.

The square root of 5055549991 is about 71102.3908951028. The cubic root of 5055549991 is about 1716.2852484977.

The spelling of 5055549991 in words is "five billion, fifty-five million, five hundred forty-nine thousand, nine hundred ninety-one".