551245321200 has 480 divisors, whose sum is σ = 2040754383360. Its totient is φ = 124592025600.

The previous prime is 551245321177. The next prime is 551245321213. The reversal of 551245321200 is 2123542155.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 296208270 + ... + 296210130.

It is an arithmetic number, because the mean of its divisors is an integer number (4251571632).

Almost surely, 2^551245321200 is an apocalyptic number.

551245321200 is a gapful number since it is divisible by the number (50) 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 551245321200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020377191680).

551245321200 is an abundant number, since it is smaller than the sum of its proper divisors (1489509062160).

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

551245321200 is a wasteful number, since it uses less digits than its factorization.

551245321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 551245321200 its reverse (2123542155), we get a palindrome (553368863355).

The spelling of 551245321200 in words is "five hundred fifty-one billion, two hundred forty-five million, three hundred twenty-one thousand, two hundred".