551471328 has 120 divisors (see below), whose sum is σ = 1633761360. Its totient is φ = 182476800.

The previous prime is 551471317. The next prime is 551471363. The reversal of 551471328 is 823174155.

551471328 is a `hidden beast` number, since 5 + 514 + 7 + 132 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 551471292 and 551471301.

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 19 ways as a sum of consecutive naturals, for example, 390688 + ... + 392096.

It is an arithmetic number, because the mean of its divisors is an integer number (13614678).

Almost surely, 2^551471328 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 551471328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816880680).

551471328 is an abundant number, since it is smaller than the sum of its proper divisors (1082290032).

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

551471328 is a wasteful number, since it uses less digits than its factorization.

551471328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1565 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 551471328 is about 23483.4266664812. The cubic root of 551471328 is about 820.0512202786.

The spelling of 551471328 in words is "five hundred fifty-one million, four hundred seventy-one thousand, three hundred twenty-eight".