55505030 has 16 divisors (see below), whose sum is σ = 114181920. Its totient is φ = 19030272.

The previous prime is 55505029. The next prime is 55505071. The reversal of 55505030 is 3050555.

It is a happy number.

55505030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55504987 and 55505005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396395 + ... + 396534.

It is an arithmetic number, because the mean of its divisors is an integer number (7136370).

Almost surely, 2^55505030 is an apocalyptic number.

55505030 is an abundant number, since it is smaller than the sum of its proper divisors (58676890).

55505030 is a wasteful number, since it uses less digits than its factorization.

55505030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792943.

The product of its (nonzero) digits is 1875, while the sum is 23.

The square root of 55505030 is about 7450.1697967228. The cubic root of 55505030 is about 381.4557044534.

Adding to 55505030 its reverse (3050555), we get a palindrome (58555585).

The spelling of 55505030 in words is "fifty-five million, five hundred five thousand, thirty".