520404541 has 4 divisors (see below), whose sum is σ = 520451584. Its totient is φ = 520357500.

The previous prime is 520404529. The next prime is 520404553. The reversal of 520404541 is 145404025.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (520404529) and next prime (520404553).

It is a cyclic number.

It is not a de Polignac number, because 520404541 - 2⁹ = 520404029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520404571) 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, 3166 + ... + 32416.

It is an arithmetic number, because the mean of its divisors is an integer number (130112896).

Almost surely, 2^520404541 is an apocalyptic number.

It is an amenable number.

520404541 is a deficient number, since it is larger than the sum of its proper divisors (47043).

520404541 is a wasteful number, since it uses less digits than its factorization.

520404541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47042.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 520404541 is about 22812.3769256954. The cubic root of 520404541 is about 804.3536295131.

Adding to 520404541 its reverse (145404025), we get a palindrome (665808566).

The spelling of 520404541 in words is "five hundred twenty million, four hundred four thousand, five hundred forty-one".