524220013 has 24 divisors (see below), whose sum is σ = 576925440. Its totient is φ = 475735680.

The previous prime is 524220001. The next prime is 524220019. The reversal of 524220013 is 310022425.

It is a de Polignac number, because none of the positive numbers 2^k-524220013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524220019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1555381 + ... + 1555717.

It is an arithmetic number, because the mean of its divisors is an integer number (24038560).

Almost surely, 2^524220013 is an apocalyptic number.

It is an amenable number.

524220013 is a deficient number, since it is larger than the sum of its proper divisors (52705427).

524220013 is a wasteful number, since it uses less digits than its factorization.

524220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 524220013 is about 22895.8514364502. The cubic root of 524220013 is about 806.3146159939.

Adding to 524220013 its reverse (310022425), we get a palindrome (834242438).

The spelling of 524220013 in words is "five hundred twenty-four million, two hundred twenty thousand, thirteen".