521053 has 8 divisors (see below), whose sum is σ = 567000.
Its totient is φ = 475968.
The previous prime is 521051. The next prime is 521063. The reversal of 521053 is 350125.
Adding to 521053 its reverse (350125), we get a palindrome (871178).
It can be divided in two parts, 52 and 1053, that multiplied together give a square (54756 = 2342).
It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 480249 = 202^2 + 693^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 521053 - 21 = 521051 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (521051) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803 + ... + 2071.
It is an arithmetic number, because the mean of its divisors is an integer number (70875).
2521053 is an apocalyptic number.
It is an amenable number.
521053 is a deficient number, since it is larger than the sum of its proper divisors (45947).
521053 is a wasteful number, since it uses less digits than its factorization.
521053 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 431.
The product of its (nonzero) digits is 150, while the sum is 16.
The square root of 521053 is about 721.8400099745.
The cubic root of 521053 is about 80.4687583718.
The spelling of 521053 in words is "five hundred twenty-one thousand, fifty-three".