56224513 has 4 divisors (see below), whose sum is σ = 56239920. Its totient is φ = 56209108.

The previous prime is 56224499. The next prime is 56224529. The reversal of 56224513 is 31542265.

56224513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56224513 - 2⁹ = 56224001 is a prime.

It is a super-2 number, since 2×56224513² = 6322391724174338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56224583) 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, 1206 + ... + 10672.

It is an arithmetic number, because the mean of its divisors is an integer number (14059980).

Almost surely, 2^56224513 is an apocalyptic number.

It is an amenable number.

56224513 is a deficient number, since it is larger than the sum of its proper divisors (15407).

56224513 is an equidigital number, since it uses as much as digits as its factorization.

56224513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15406.

The product of its digits is 7200, while the sum is 28.

The square root of 56224513 is about 7498.3006741528. The cubic root of 56224513 is about 383.0968380365.

Adding to 56224513 its reverse (31542265), we get a palindrome (87766778).

The spelling of 56224513 in words is "fifty-six million, two hundred twenty-four thousand, five hundred thirteen".