551543660 has 24 divisors (see below), whose sum is σ = 1166580240. Its totient is φ = 219029184.

The previous prime is 551543659. The next prime is 551543687. The reversal of 551543660 is 66345155.

It is a super-3 number, since 3×551543660³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 551543660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96419 + ... + 101978.

It is an arithmetic number, because the mean of its divisors is an integer number (48607510).

Almost surely, 2^551543660 is an apocalyptic number.

It is an amenable number.

551543660 is an abundant number, since it is smaller than the sum of its proper divisors (615036580).

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

551543660 is a wasteful number, since it uses less digits than its factorization.

551543660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198545 (or 198543 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 551543660 is about 23484.9666808365. The cubic root of 551543660 is about 820.0870718564.

The spelling of 551543660 in words is "five hundred fifty-one million, five hundred forty-three thousand, six hundred sixty".