551568020 has 12 divisors (see below), whose sum is σ = 1158292884. Its totient is φ = 220627200.

The previous prime is 551568007. The next prime is 551568047. The reversal of 551568020 is 20865155.

It can be written as a sum of positive squares in 2 ways, for example, as 251793424 + 299774596 = 15868^2 + 17314^2 .

It is a congruent number.

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, 13789181 + ... + 13789220.

It is an arithmetic number, because the mean of its divisors is an integer number (96524407).

Almost surely, 2^551568020 is an apocalyptic number.

It is an amenable number.

551568020 is an abundant number, since it is smaller than the sum of its proper divisors (606724864).

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

551568020 is a wasteful number, since it uses less digits than its factorization.

551568020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27578410 (or 27578408 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 551568020 is about 23485.4853047579. The cubic root of 551568020 is about 820.0991452596.

The spelling of 551568020 in words is "five hundred fifty-one million, five hundred sixty-eight thousand, twenty".