520404041 has 4 divisors (see below), whose sum is σ = 525178500. Its totient is φ = 515629584.

The previous prime is 520404029. The next prime is 520404089. The reversal of 520404041 is 140404025.

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 461175625 + 59228416 = 21475^2 + 7696^2 .

It is a cyclic number.

It is not a de Polignac number, because 520404041 - 2¹⁴ = 520387657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520404341) 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, 2387066 + ... + 2387283.

It is an arithmetic number, because the mean of its divisors is an integer number (131294625).

Almost surely, 2^520404041 is an apocalyptic number.

It is an amenable number.

520404041 is a deficient number, since it is larger than the sum of its proper divisors (4774459).

520404041 is a wasteful number, since it uses less digits than its factorization.

520404041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774458.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 520404041 is about 22812.3659667295. The cubic root of 520404041 is about 804.3533719077.

Adding to 520404041 its reverse (140404025), we get a palindrome (660808066).

The spelling of 520404041 in words is "five hundred twenty million, four hundred four thousand, forty-one".