551320222232 has 64 divisors (see below), whose sum is σ = 1141041142080. Its totient is φ = 248159089152.

The previous prime is 551320222223. The next prime is 551320222237. The reversal of 551320222232 is 232222023155.

It is a junction number, because it is equal to n+sod(n) for n = 551320222195 and 551320222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551320222237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621038 + ... + 1219970.

It is an arithmetic number, because the mean of its divisors is an integer number (17828767845).

Almost surely, 2^551320222232 is an apocalyptic number.

551320222232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551320222232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570520571040).

551320222232 is an abundant number, since it is smaller than the sum of its proper divisors (589720919848).

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

551320222232 is a wasteful number, since it uses less digits than its factorization.

551320222232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599172 (or 599168 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 551320222232 its reverse (232222023155), we get a palindrome (783542245387).

The spelling of 551320222232 in words is "five hundred fifty-one billion, three hundred twenty million, two hundred twenty-two thousand, two hundred thirty-two".