520223013 has 16 divisors (see below), whose sum is σ = 771067840. Its totient is φ = 346650192.

The previous prime is 520222991. The next prime is 520223107. The reversal of 520223013 is 310322025.

It is not a de Polignac number, because 520223013 - 2⁸ = 520222757 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 (520213013) 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, 84870 + ... + 90792.

It is an arithmetic number, because the mean of its divisors is an integer number (48191740).

Almost surely, 2^520223013 is an apocalyptic number.

It is an amenable number.

520223013 is a deficient number, since it is larger than the sum of its proper divisors (250844827).

520223013 is a wasteful number, since it uses less digits than its factorization.

520223013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185 (or 9179 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 520223013 is about 22808.3978613142. The cubic root of 520223013 is about 804.2600935073.

Adding to 520223013 its reverse (310322025), we get a palindrome (830545038).

The spelling of 520223013 in words is "five hundred twenty million, two hundred twenty-three thousand, thirteen".