520541 has 4 divisors (see below), whose sum is σ = 594912. Its totient is φ = 446172.

The previous prime is 520529. The next prime is 520547. The reversal of 520541 is 145025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520541 - 2¹⁴ = 504157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520547) 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 3 ways as a sum of consecutive naturals, for example, 37175 + ... + 37188.

It is an arithmetic number, because the mean of its divisors is an integer number (148728).

2⁵²⁰⁵⁴¹ is an apocalyptic number.

It is an amenable number.

520541 is a deficient number, since it is larger than the sum of its proper divisors (74371).

520541 is an equidigital number, since it uses as much as digits as its factorization.

520541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 520541 is about 721.4852735850. The cubic root of 520541 is about 80.4423928477.

Adding to 520541 its reverse (145025), we get a palindrome (665566).

The spelling of 520541 in words is "five hundred twenty thousand, five hundred forty-one".