551021030424 has 128 divisors (see below), whose sum is σ = 1570950163200. Its totient is φ = 178859197440.

The previous prime is 551021030387. The next prime is 551021030453. The reversal of 551021030424 is 424030120155.

551021030424 is a `hidden beast` number, since 5 + 510 + 2 + 103 + 0 + 42 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2984712 + ... + 3163944.

It is an arithmetic number, because the mean of its divisors is an integer number (12273048150).

Almost surely, 2^551021030424 is an apocalyptic number.

551021030424 is a gapful number since it is divisible by the number (54) 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 551021030424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785475081600).

551021030424 is an abundant number, since it is smaller than the sum of its proper divisors (1019929132776).

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

551021030424 is a wasteful number, since it uses less digits than its factorization.

551021030424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179622 (or 179612 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 551021030424 its reverse (424030120155), we get a palindrome (975051150579).

The spelling of 551021030424 in words is "five hundred fifty-one billion, twenty-one million, thirty thousand, four hundred twenty-four".