551386664 has 32 divisors (see below), whose sum is σ = 1046520000. Its totient is φ = 272332032.

The previous prime is 551386651. The next prime is 551386673. The reversal of 551386664 is 466683155.

551386664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 323687 + ... + 325385.

It is an arithmetic number, because the mean of its divisors is an integer number (32703750).

Almost surely, 2^551386664 is an apocalyptic number.

It is an amenable number.

551386664 is a deficient number, since it is larger than the sum of its proper divisors (495133336).

551386664 is a wasteful number, since it uses less digits than its factorization.

551386664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177 (or 2173 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 551386664 is about 23481.6239642832. The cubic root of 551386664 is about 820.0092523247.

The spelling of 551386664 in words is "five hundred fifty-one million, three hundred eighty-six thousand, six hundred sixty-four".