55505231230 has 32 divisors (see below), whose sum is σ = 103283693568. Its totient is φ = 21454356000.

The previous prime is 55505231219. The next prime is 55505231311. The reversal of 55505231230 is 3213250555.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 55505231192 and 55505231201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80655 + ... + 342805.

It is an arithmetic number, because the mean of its divisors is an integer number (3227615424).

Almost surely, 2^55505231230 is an apocalyptic number.

55505231230 is a deficient number, since it is larger than the sum of its proper divisors (47778462338).

55505231230 is a wasteful number, since it uses less digits than its factorization.

55505231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262872.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 55505231230 its reverse (3213250555), we get a palindrome (58718481785).

The spelling of 55505231230 in words is "fifty-five billion, five hundred five million, two hundred thirty-one thousand, two hundred thirty".