56113200421 has 2 divisors, whose sum is σ = 56113200422. Its totient is φ = 56113200420.

The previous prime is 56113200397. The next prime is 56113200433. The reversal of 56113200421 is 12400231165.

It is a happy number.

56113200421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54023704900 + 2089495521 = 232430^2 + 45711^2 .

It is a cyclic number.

It is not a de Polignac number, because 56113200421 - 2⁵ = 56113200389 is a prime.

It is a super-2 number, since 2×56113200421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56113201421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28056600210 + 28056600211.

It is an arithmetic number, because the mean of its divisors is an integer number (28056600211).

Almost surely, 2^56113200421 is an apocalyptic number.

It is an amenable number.

56113200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

56113200421 is an equidigital number, since it uses as much as digits as its factorization.

56113200421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 56113200421 its reverse (12400231165), we get a palindrome (68513431586).

The spelling of 56113200421 in words is "fifty-six billion, one hundred thirteen million, two hundred thousand, four hundred twenty-one".