551006656 has 56 divisors (see below), whose sum is σ = 1132722144. Its totient is φ = 265774080.

The previous prime is 551006629. The next prime is 551006671. The reversal of 551006656 is 656600155.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 205581 + ... + 208243.

Almost surely, 2^551006656 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 551006656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566361072).

551006656 is an abundant number, since it is smaller than the sum of its proper divisors (581715488).

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

551006656 is a wasteful number, since it uses less digits than its factorization.

551006656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 551006656 is about 23473.5309657495. The cubic root of 551006656 is about 819.8208293846.

The spelling of 551006656 in words is "five hundred fifty-one million, six thousand, six hundred fifty-six".