Adding to 520531141 its reverse (141135025), we get a palindrome (661666166).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-520531141 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 2520531141 is an apocalyptic number.
It is an amenable number.
520531141 is a wasteful number, since it uses less digits than its factorization.
520531141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 156071.
The square root of 520531141 is about 22815.1515664481. The cubic root of 520531141 is about 804.4188498721.
The spelling of 520531141 in words is "five hundred twenty million, five hundred thirty-one thousand, one hundred forty-one".