551943360 has 168 divisors, whose sum is σ = 1922160240. Its totient is φ = 145348608.

The previous prime is 551943347. The next prime is 551943367. The reversal of 551943360 is 63349155.

551943360 is a `hidden beast` number, since 551 + 9 + 43 + 3 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (551943367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237886 + ... + 240194.

It is an arithmetic number, because the mean of its divisors is an integer number (11441430).

Almost surely, 2^551943360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551943360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961080120).

551943360 is an abundant number, since it is smaller than the sum of its proper divisors (1370216880).

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

551943360 is a wasteful number, since it uses less digits than its factorization.

551943360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 551943360 is about 23493.4748387717. The cubic root of 551943360 is about 820.2851278921.

The spelling of 551943360 in words is "five hundred fifty-one million, nine hundred forty-three thousand, three hundred sixty".