550918368 has 576 divisors, whose sum is σ = 2213568000. Its totient is φ = 132088320.

The previous prime is 550918343. The next prime is 550918369. The reversal of 550918368 is 863819055.

550918368 is a `hidden beast` number, since 5 + 509 + 1 + 83 + 68 = 666.

It is a super-2 number, since 2×550918368² = 607022096399566848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550918369) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42378330 + ... + 42378342.

It is an arithmetic number, because the mean of its divisors is an integer number (3843000).

Almost surely, 2^550918368 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 550918368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106784000).

550918368 is an abundant number, since it is smaller than the sum of its proper divisors (1662649632).

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

550918368 is a wasteful number, since it uses less digits than its factorization.

550918368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 550918368 is about 23471.6503041435. The cubic root of 550918368 is about 819.7770403143. Note that the first 3 decimals are identical.

The spelling of 550918368 in words is "five hundred fifty million, nine hundred eighteen thousand, three hundred sixty-eight".