520540353 has 12 divisors (see below), whose sum is σ = 763114768. Its totient is φ = 341847000.

The previous prime is 520540277. The next prime is 520540373. The reversal of 520540353 is 353045025.

520540353 is a `hidden beast` number, since 5 + 205 + 403 + 53 = 666.

It is not a de Polignac number, because 520540353 - 2¹⁰ = 520539329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520540373) 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 11 ways as a sum of consecutive naturals, for example, 431023 + ... + 432228.

Almost surely, 2^520540353 is an apocalyptic number.

It is an amenable number.

520540353 is a deficient number, since it is larger than the sum of its proper divisors (242574415).

520540353 is a wasteful number, since it uses less digits than its factorization.

520540353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863324 (or 863321 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 520540353 is about 22815.3534489387. The cubic root of 520540353 is about 804.4235951935.

Adding to 520540353 its reverse (353045025), we get a palindrome (873585378).

The spelling of 520540353 in words is "five hundred twenty million, five hundred forty thousand, three hundred fifty-three".