5556050991 has 12 divisors (see below), whose sum is σ = 8088600832. Its totient is φ = 3674867616.

The previous prime is 5556050963. The next prime is 5556051013. The reversal of 5556050991 is 1990506555.

5556050991 is a `hidden beast` number, since 5 + 5 + 56 + 0 + 509 + 91 = 666.

It is not a de Polignac number, because 5556050991 - 2¹⁴ = 5556034607 is a prime.

It is a super-2 number, since 2×5556050991² = 61739405229184164162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556050921) 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 11 ways as a sum of consecutive naturals, for example, 2429326 + ... + 2431611.

Almost surely, 2^5556050991 is an apocalyptic number.

5556050991 is a deficient number, since it is larger than the sum of its proper divisors (2532549841).

5556050991 is a wasteful number, since it uses less digits than its factorization.

5556050991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861070 (or 4861067 counting only the distinct ones).

The product of its (nonzero) digits is 303750, while the sum is 45.

The square root of 5556050991 is about 74538.9226578973. The cubic root of 5556050991 is about 1771.1502616115.

The spelling of 5556050991 in words is "five billion, five hundred fifty-six million, fifty thousand, nine hundred ninety-one".