551253121002 has 192 divisors, whose sum is σ = 1314865843200. Its totient is φ = 166259589120.

The previous prime is 551253120991. The next prime is 551253121049. The reversal of 551253121002 is 200121352155.

551253121002 is a `hidden beast` number, since 551 + 2 + 5 + 3 + 1 + 2 + 100 + 2 = 666.

551253121002 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 593382874 + ... + 593383802.

It is an arithmetic number, because the mean of its divisors is an integer number (6848259600).

Almost surely, 2^551253121002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551253121002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657432921600).

551253121002 is an abundant number, since it is smaller than the sum of its proper divisors (763612722198).

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

551253121002 is a wasteful number, since it uses less digits than its factorization.

551253121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 551253121002 its reverse (200121352155), we get a palindrome (751374473157).

The spelling of 551253121002 in words is "five hundred fifty-one billion, two hundred fifty-three million, one hundred twenty-one thousand, two".