551430824 has 64 divisors (see below), whose sum is σ = 1226707200. Its totient is φ = 227372544.

The previous prime is 551430809. The next prime is 551430833. The reversal of 551430824 is 428034155.

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 15 ways as a sum of consecutive naturals, for example, 741797 + ... + 742539.

It is an arithmetic number, because the mean of its divisors is an integer number (19167300).

Almost surely, 2^551430824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551430824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613353600).

551430824 is an abundant number, since it is smaller than the sum of its proper divisors (675276376).

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

551430824 is a wasteful number, since it uses less digits than its factorization.

551430824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 551430824 is about 23482.5642552086. The cubic root of 551430824 is about 820.0311429774.

Adding to 551430824 its reverse (428034155), we get a palindrome (979464979).

The spelling of 551430824 in words is "five hundred fifty-one million, four hundred thirty thousand, eight hundred twenty-four".