520365081 has 12 divisors (see below), whose sum is σ = 704613552. Its totient is φ = 341519904.

The previous prime is 520365061. The next prime is 520365089. The reversal of 520365081 is 180563025.

It is not a de Polignac number, because 520365081 - 2⁵ = 520365049 is a prime.

It is a super-2 number, since 2×520365081² = 541559635048273122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520365089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322605 + ... + 324213.

It is an arithmetic number, because the mean of its divisors is an integer number (58717796).

Almost surely, 2^520365081 is an apocalyptic number.

It is an amenable number.

520365081 is a deficient number, since it is larger than the sum of its proper divisors (184248471).

520365081 is an frugal number, since it uses more digits than its factorization.

520365081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 520365081 is about 22811.5120279213. The cubic root of 520365081 is about 804.3332987934. Note that the first 3 decimals are identical.

The spelling of 520365081 in words is "five hundred twenty million, three hundred sixty-five thousand, eighty-one".