550787538 has 96 divisors (see below), whose sum is σ = 1319353920. Its totient is φ = 152785920.

The previous prime is 550787533. The next prime is 550787581. The reversal of 550787538 is 835787055.

It is a happy number.

It is a super-3 number, since 3×550787538³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (550787533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1959958 + ... + 1960238.

It is an arithmetic number, because the mean of its divisors is an integer number (13743270).

Almost surely, 2^550787538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550787538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659676960).

550787538 is an abundant number, since it is smaller than the sum of its proper divisors (768566382).

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

550787538 is a wasteful number, since it uses less digits than its factorization.

550787538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The square root of 550787538 is about 23468.8631595141. The cubic root of 550787538 is about 819.7121426649.

The spelling of 550787538 in words is "five hundred fifty million, seven hundred eighty-seven thousand, five hundred thirty-eight".