520761841 has 4 divisors (see below), whose sum is σ = 521037684. Its totient is φ = 520486000.

The previous prime is 520761821. The next prime is 520761847. The reversal of 520761841 is 148167025.

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 286794225 + 233967616 = 16935^2 + 15296^2 .

It is a cyclic number.

It is not a de Polignac number, because 520761841 - 2⁵ = 520761809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520761797 and 520761806.

It is not an unprimeable number, because it can be changed into a prime (520761847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135070 + ... + 138871.

It is an arithmetic number, because the mean of its divisors is an integer number (130259421).

Almost surely, 2^520761841 is an apocalyptic number.

It is an amenable number.

520761841 is a deficient number, since it is larger than the sum of its proper divisors (275843).

520761841 is a wasteful number, since it uses less digits than its factorization.

520761841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275842.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 520761841 is about 22820.2068570817. The cubic root of 520761841 is about 804.5376721061.

The spelling of 520761841 in words is "five hundred twenty million, seven hundred sixty-one thousand, eight hundred forty-one".