551005056 has 96 divisors (see below), whose sum is σ = 1812111600. Its totient is φ = 157427712.

The previous prime is 551005031. The next prime is 551005069. The reversal of 551005056 is 650500155.

551005056 is a `hidden beast` number, since 55 + 100 + 505 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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 11 ways as a sum of consecutive naturals, for example, 26101 + ... + 42228.

Almost surely, 2^551005056 is an apocalyptic number.

551005056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

551005056 is an abundant number, since it is smaller than the sum of its proper divisors (1261106544).

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

551005056 is a wasteful number, since it uses less digits than its factorization.

551005056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68356 (or 68341 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 551005056 is about 23473.4968847848. The cubic root of 551005056 is about 819.8200358584.

The spelling of 551005056 in words is "five hundred fifty-one million, five thousand, fifty-six".