It is a congruent number.
It is an unprimeable number.
Almost surely, 2493721550 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 493721550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771549948).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
493721550 is a wasteful number, since it uses less digits than its factorization.
493721550 is an odious number, because the sum of its binary digits is odd.
The square root of 493721550 is about 22219.8458590513. The cubic root of 493721550 is about 790.3643835251.
The spelling of 493721550 in words is "four hundred ninety-three million, seven hundred twenty-one thousand, five hundred fifty".