520741 has 8 divisors (see below), whose sum is σ = 575064. Its totient is φ = 468480.

The previous prime is 520721. The next prime is 520747. The reversal of 520741 is 147025.

It can be written as a sum of positive squares in 4 ways, for example, as 16641 + 504100 = 129^2 + 710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520741 - 2¹⁵ = 487973 is a prime.

It is a Duffinian number.

520741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (71883).

2⁵²⁰⁷⁴¹ is an apocalyptic number.

It is an amenable number.

520741 is a deficient number, since it is larger than the sum of its proper divisors (54323).

520741 is a wasteful number, since it uses less digits than its factorization.

520741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 520741 is about 721.6238632418. The cubic root of 520741 is about 80.4526939373.

Adding to 520741 its reverse (147025), we get a palindrome (667766).

The spelling of 520741 in words is "five hundred twenty thousand, seven hundred forty-one".