550139040 has 480 divisors, whose sum is σ = 2252505024. Its totient is φ = 124968960.

The previous prime is 550139003. The next prime is 550139041. The reversal of 550139040 is 40931055.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 550138995 and 550139013.

It is not an unprimeable number, because it can be changed into a prime (550139041) 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 79 ways as a sum of consecutive naturals, for example, 2423407 + ... + 2423633.

Almost surely, 2^550139040 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 550139040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126252512).

550139040 is an abundant number, since it is smaller than the sum of its proper divisors (1702365984).

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

550139040 is a wasteful number, since it uses less digits than its factorization.

550139040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 550139040 is about 23455.0429545546. The cubic root of 550139040 is about 819.3903062560.

The spelling of 550139040 in words is "five hundred fifty million, one hundred thirty-nine thousand, forty".