551289388 has 12 divisors (see below), whose sum is σ = 1038968560. Its totient is φ = 254441232.

The previous prime is 551289353. The next prime is 551289397. The reversal of 551289388 is 883982155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300808 + ... + 5300911.

Almost surely, 2^551289388 is an apocalyptic number.

It is an amenable number.

551289388 is a deficient number, since it is larger than the sum of its proper divisors (487679172).

551289388 is a wasteful number, since it uses less digits than its factorization.

551289388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601736 (or 10601734 counting only the distinct ones).

The product of its digits is 691200, while the sum is 49.

The square root of 551289388 is about 23479.5525511028. The cubic root of 551289388 is about 819.9610272971.

It can be divided in two parts, 55128 and 9388, that added together give a square (64516 = 254²).

The spelling of 551289388 in words is "five hundred fifty-one million, two hundred eighty-nine thousand, three hundred eighty-eight".