551849760 has 720 divisors, whose sum is σ = 2502783360. Its totient is φ = 113218560.

The previous prime is 551849743. The next prime is 551849761. The reversal of 551849760 is 67948155.

551849760 is a `hidden beast` number, since 551 + 8 + 4 + 97 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×551849760² = 609076315224115200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551849761) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 6985401 + ... + 6985479.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^551849760 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 551849760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251391680).

551849760 is an abundant number, since it is smaller than the sum of its proper divisors (1950933600).

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

551849760 is a wasteful number, since it uses less digits than its factorization.

551849760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 551849760 is about 23491.4827118256. The cubic root of 551849760 is about 820.2387565709.

It can be divided in two parts, 5518 and 49760, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 551849760 in words is "five hundred fifty-one million, eight hundred forty-nine thousand, seven hundred sixty".