56244421 has 2 divisors, whose sum is σ = 56244422. Its totient is φ = 56244420.

The previous prime is 56244413. The next prime is 56244437. The reversal of 56244421 is 12444265.

56244421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 16112196 = 6335^2 + 4014^2 .

It is a cyclic number.

It is not a de Polignac number, because 56244421 - 2³ = 56244413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56244421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56244401) 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 as a sum of consecutive naturals, namely, 28122210 + 28122211.

It is an arithmetic number, because the mean of its divisors is an integer number (28122211).

Almost surely, 2^56244421 is an apocalyptic number.

It is an amenable number.

56244421 is a deficient number, since it is larger than the sum of its proper divisors (1).

56244421 is an equidigital number, since it uses as much as digits as its factorization.

56244421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 56244421 is about 7499.6280574439. The cubic root of 56244421 is about 383.1420483992.

Adding to 56244421 its reverse (12444265), we get a palindrome (68688686).

It can be divided in two parts, 56244 and 421, that added together give a palindrome (56665).

The spelling of 56244421 in words is "fifty-six million, two hundred forty-four thousand, four hundred twenty-one".