520764341 has 4 divisors (see below), whose sum is σ = 520845612. Its totient is φ = 520683072.

The previous prime is 520764313. The next prime is 520764359. The reversal of 520764341 is 143467025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178329316 + 342435025 = 13354^2 + 18505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520764341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520764298 and 520764307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520764301) 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 3 ways as a sum of consecutive naturals, for example, 30116 + ... + 44141.

It is an arithmetic number, because the mean of its divisors is an integer number (130211403).

Almost surely, 2^520764341 is an apocalyptic number.

It is an amenable number.

520764341 is a deficient number, since it is larger than the sum of its proper divisors (81271).

520764341 is an equidigital number, since it uses as much as digits as its factorization.

520764341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81270.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 520764341 is about 22820.2616330313. The cubic root of 520764341 is about 804.5389595410.

The spelling of 520764341 in words is "five hundred twenty million, seven hundred sixty-four thousand, three hundred forty-one".