551259648 has 80 divisors (see below), whose sum is σ = 1631807760. Its totient is φ = 183748608.

The previous prime is 551259617. The next prime is 551259671. The reversal of 551259648 is 846952155.

551259648 is a `hidden beast` number, since 5 + 5 + 12 + 596 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6115 + ... + 33762.

It is an arithmetic number, because the mean of its divisors is an integer number (20397597).

Almost surely, 2^551259648 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 551259648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815903880).

551259648 is an abundant number, since it is smaller than the sum of its proper divisors (1080548112).

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

551259648 is an equidigital number, since it uses as much as digits as its factorization.

551259648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39904 (or 39882 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 551259648 is about 23478.9192255521. The cubic root of 551259648 is about 819.9462824220.

The spelling of 551259648 in words is "five hundred fifty-one million, two hundred fifty-nine thousand, six hundred forty-eight".