520020011 has 16 divisors (see below), whose sum is σ = 601219584. Its totient is φ = 440571264.

The previous prime is 520020001. The next prime is 520020019. The reversal of 520020011 is 110020025.

It is not a de Polignac number, because 520020011 - 2¹⁸ = 519757867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520019974 and 520020001.

It is not an unprimeable number, because it can be changed into a prime (520020019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397220 + ... + 398526.

It is an arithmetic number, because the mean of its divisors is an integer number (37576224).

Almost surely, 2^520020011 is an apocalyptic number.

520020011 is a deficient number, since it is larger than the sum of its proper divisors (81199573).

520020011 is a wasteful number, since it uses less digits than its factorization.

520020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 520020011 is about 22803.9472679622. The cubic root of 520020011 is about 804.1554668090.

Adding to 520020011 its reverse (110020025), we get a palindrome (630040036).

The spelling of 520020011 in words is "five hundred twenty million, twenty thousand, eleven".