5550550551 has 24 divisors (see below), whose sum is σ = 9867646880. Its totient is φ = 2927762496.

The previous prime is 5550550543. The next prime is 5550550571. The reversal of 5550550551 is 1550550555.

It is a happy number.

5550550551 is a `hidden beast` number, since 5 + 5 + 50 + 5 + 50 + 551 = 666.

It is not a de Polignac number, because 5550550551 - 2³ = 5550550543 is a prime.

It is a super-2 number, since 2×5550550551² = 61617222838412807202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5550550501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3387796 + ... + 3389433.

Almost surely, 2^5550550551 is an apocalyptic number.

5550550551 is a deficient number, since it is larger than the sum of its proper divisors (4317096329).

5550550551 is a wasteful number, since it uses less digits than its factorization.

5550550551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777255 (or 6777252 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The square root of 5550550551 is about 74502.0170934989. The cubic root of 5550550551 is about 1770.5655944084.

The spelling of 5550550551 in words is "five billion, five hundred fifty million, five hundred fifty thousand, five hundred fifty-one".