55550550551 has 8 divisors (see below), whose sum is σ = 56111802624. Its totient is φ = 54989519200.

The previous prime is 55550550493. The next prime is 55550550569. The reversal of 55550550551 is 15505505555.

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 55550550551 - 2¹⁸ = 55550288407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55550550499 and 55550550508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550555551) 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 7 ways as a sum of consecutive naturals, for example, 476426 + ... + 581448.

It is an arithmetic number, because the mean of its divisors is an integer number (7013975328).

Almost surely, 2^55550550551 is an apocalyptic number.

55550550551 is a deficient number, since it is larger than the sum of its proper divisors (561252073).

55550550551 is a wasteful number, since it uses less digits than its factorization.

55550550551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110361.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 55550550551 in words is "fifty-five billion, five hundred fifty million, five hundred fifty thousand, five hundred fifty-one".