551424320 has 56 divisors (see below), whose sum is σ = 1348596744. Its totient is φ = 214603776.

The previous prime is 551424319. The next prime is 551424337. The reversal of 551424320 is 23424155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20214016 + 531210304 = 4496^2 + 23048^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551424320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11447 + ... + 35126.

Almost surely, 2^551424320 is an apocalyptic number.

It is an amenable number.

551424320 is an abundant number, since it is smaller than the sum of its proper divisors (797172424).

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

551424320 is a wasteful number, since it uses less digits than its factorization.

551424320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46627 (or 46617 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 551424320 is about 23482.4257690725. The cubic root of 551424320 is about 820.0279189384.

Adding to 551424320 its reverse (23424155), we get a palindrome (574848475).

The spelling of 551424320 in words is "five hundred fifty-one million, four hundred twenty-four thousand, three hundred twenty".