520224345 has 12 divisors (see below), whose sum is σ = 901722276. Its totient is φ = 277452960.

The previous prime is 520224311. The next prime is 520224349. The reversal of 520224345 is 543422025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109432521 + 410791824 = 10461^2 + 20268^2 .

It is not a de Polignac number, because 520224345 - 2¹⁰ = 520223321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520224349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5780226 + ... + 5780315.

It is an arithmetic number, because the mean of its divisors is an integer number (75143523).

Almost surely, 2^520224345 is an apocalyptic number.

It is an amenable number.

520224345 is a deficient number, since it is larger than the sum of its proper divisors (381497931).

520224345 is a wasteful number, since it uses less digits than its factorization.

520224345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560552 (or 11560549 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 520224345 is about 22808.4270610667. The cubic root of 520224345 is about 804.2607799267.

The spelling of 520224345 in words is "five hundred twenty million, two hundred twenty-four thousand, three hundred forty-five".