55358036550 has 168 divisors, whose sum is σ = 158554549776. Its totient is φ = 14362816320.

The previous prime is 55358036521. The next prime is 55358036597. The reversal of 55358036550 is 5563085355.

55358036550 is a `hidden beast` number, since 5 + 5 + 3 + 580 + 3 + 65 + 5 + 0 = 666.

It is a super-2 number, since 2×55358036550² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 55358036496 and 55358036505.

It is a congruent number.

It is an unprimeable number.

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 83 ways as a sum of consecutive naturals, for example, 1328127 + ... + 1369173.

It is an arithmetic number, because the mean of its divisors is an integer number (943777082).

Almost surely, 2^55358036550 is an apocalyptic number.

55358036550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55358036550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79277274888).

55358036550 is an abundant number, since it is smaller than the sum of its proper divisors (103196513226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55358036550 is a wasteful number, since it uses less digits than its factorization.

55358036550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41114 (or 41094 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 45.

The spelling of 55358036550 in words is "fifty-five billion, three hundred fifty-eight million, thirty-six thousand, five hundred fifty".