520561441 has 4 divisors (see below), whose sum is σ = 522235584. Its totient is φ = 518887300.

The previous prime is 520561429. The next prime is 520561469. The reversal of 520561441 is 144165025.

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 520561441 - 2¹¹ = 520559393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520361441) 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, 836605 + ... + 837226.

It is an arithmetic number, because the mean of its divisors is an integer number (130558896).

Almost surely, 2^520561441 is an apocalyptic number.

It is an amenable number.

520561441 is a deficient number, since it is larger than the sum of its proper divisors (1674143).

520561441 is a wasteful number, since it uses less digits than its factorization.

520561441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674142.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 520561441 is about 22815.8155891916. The cubic root of 520561441 is about 804.4344579157.

The spelling of 520561441 in words is "five hundred twenty million, five hundred sixty-one thousand, four hundred forty-one".