551065868 has 24 divisors (see below), whose sum is σ = 970794720. Its totient is φ = 273703040.

The previous prime is 551065849. The next prime is 551065877. The reversal of 551065868 is 868560155.

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, 560105 + ... + 561087.

It is an arithmetic number, because the mean of its divisors is an integer number (40449780).

Almost surely, 2^551065868 is an apocalyptic number.

It is an amenable number.

551065868 is a deficient number, since it is larger than the sum of its proper divisors (419728852).

551065868 is a wasteful number, since it uses less digits than its factorization.

551065868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 551065868 is about 23474.7921822537. The cubic root of 551065868 is about 819.8501947239.

The spelling of 551065868 in words is "five hundred fifty-one million, sixty-five thousand, eight hundred sixty-eight".