551220225030 has 64 divisors (see below), whose sum is σ = 1469992536000. Its totient is φ = 146984866560.

The previous prime is 551220225019. The next prime is 551220225079. The reversal of 551220225030 is 30522022155.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 551220224985 and 551220225003.

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 31 ways as a sum of consecutive naturals, for example, 7699600 + ... + 7770860.

It is an arithmetic number, because the mean of its divisors is an integer number (22968633375).

Almost surely, 2^551220225030 is an apocalyptic number.

551220225030 is an abundant number, since it is smaller than the sum of its proper divisors (918772310970).

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

551220225030 is a wasteful number, since it uses less digits than its factorization.

551220225030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99926 (or 99920 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 551220225030 its reverse (30522022155), we get a palindrome (581742247185).

The spelling of 551220225030 in words is "five hundred fifty-one billion, two hundred twenty million, two hundred twenty-five thousand, thirty".