550250640 has 360 divisors, whose sum is σ = 2045192760. Its totient is φ = 132378624.

The previous prime is 550250633. The next prime is 550250663. The reversal of 550250640 is 46052055.

550250640 is a `hidden beast` number, since 550 + 2 + 50 + 64 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 71166096 + 479084544 = 8436^2 + 21888^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7537644 + ... + 7537716.

It is an arithmetic number, because the mean of its divisors is an integer number (5681091).

Almost surely, 2^550250640 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 550250640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022596380).

550250640 is an abundant number, since it is smaller than the sum of its proper divisors (1494942120).

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

550250640 is a wasteful number, since it uses less digits than its factorization.

550250640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 550250640 is about 23457.4218532216. The cubic root of 550250640 is about 819.4457090838.

The spelling of 550250640 in words is "five hundred fifty million, two hundred fifty thousand, six hundred forty".