551243230230 has 128 divisors (see below), whose sum is σ = 1664850309120. Its totient is φ = 113473491840.

The previous prime is 551243230211. The next prime is 551243230243. The reversal of 551243230230 is 32032342155.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 63 ways as a sum of consecutive naturals, for example, 867940 + ... + 1362279.

It is an arithmetic number, because the mean of its divisors is an integer number (13006643040).

Almost surely, 2^551243230230 is an apocalyptic number.

551243230230 is an abundant number, since it is smaller than the sum of its proper divisors (1113607078890).

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

551243230230 is a wasteful number, since it uses less digits than its factorization.

551243230230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230354.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 551243230230 its reverse (32032342155), we get a palindrome (583275572385).

The spelling of 551243230230 in words is "five hundred fifty-one billion, two hundred forty-three million, two hundred thirty thousand, two hundred thirty".