521341252 has 6 divisors (see below), whose sum is σ = 912347198. Its totient is φ = 260670624.

The previous prime is 521341217. The next prime is 521341273. The reversal of 521341252 is 252143125.

It can be written as a sum of positive squares in only one way, i.e., 439908676 + 81432576 = 20974^2 + 9024^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65167653 + ... + 65167660.

Almost surely, 2^521341252 is an apocalyptic number.

It is an amenable number.

521341252 is a deficient number, since it is larger than the sum of its proper divisors (391005946).

521341252 is a wasteful number, since it uses less digits than its factorization.

521341252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130335317 (or 130335315 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 521341252 is about 22832.8984581459. The cubic root of 521341252 is about 804.8359435752.

Adding to 521341252 its reverse (252143125), we get a palindrome (773484377).

The spelling of 521341252 in words is "five hundred twenty-one million, three hundred forty-one thousand, two hundred fifty-two".