551666884 has 24 divisors (see below), whose sum is σ = 999633600. Its totient is φ = 266075040.

The previous prime is 551666851. The next prime is 551666893. The reversal of 551666884 is 488666155.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 216699 + ... + 219229.

It is an arithmetic number, because the mean of its divisors is an integer number (41651400).

Almost surely, 2^551666884 is an apocalyptic number.

It is an amenable number.

551666884 is a deficient number, since it is larger than the sum of its proper divisors (447966716).

551666884 is a wasteful number, since it uses less digits than its factorization.

551666884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443 (or 4441 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 49.

The square root of 551666884 is about 23487.5899998276. The cubic root of 551666884 is about 820.1481409926.

The spelling of 551666884 in words is "five hundred fifty-one million, six hundred sixty-six thousand, eight hundred eighty-four".