551531022422420 has 24 divisors (see below), whose sum is σ = 1208572327396224. Its totient is φ = 211020565100576.

The previous prime is 551531022422389. The next prime is 551531022422423. The reversal of 551531022422420 is 24224220135155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551531022422423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599490241304 + ... + 599490242223.

It is an arithmetic number, because the mean of its divisors is an integer number (50357180308176).

Almost surely, 2^{551531022422420} is an apocalyptic number.

It is an amenable number.

551531022422420 is an abundant number, since it is smaller than the sum of its proper divisors (657041304973804).

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

551531022422420 is a wasteful number, since it uses less digits than its factorization.

551531022422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198980483559 (or 1198980483557 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 551531022422420 its reverse (24224220135155), we get a palindrome (575755242557575).

The spelling of 551531022422420 in words is "five hundred fifty-one trillion, five hundred thirty-one billion, twenty-two million, four hundred twenty-two thousand, four hundred twenty".