56541000421 has 2 divisors, whose sum is σ = 56541000422. Its totient is φ = 56541000420.

The previous prime is 56541000359. The next prime is 56541000463. The reversal of 56541000421 is 12400014565.

56541000421 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., 32225276196 + 24315724225 = 179514^2 + 155935^2 .

It is a cyclic number.

It is not a de Polignac number, because 56541000421 - 2¹³ = 56540992229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56541000421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56541000721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28270500210 + 28270500211.

It is an arithmetic number, because the mean of its divisors is an integer number (28270500211).

Almost surely, 2^56541000421 is an apocalyptic number.

It is an amenable number.

56541000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

56541000421 is an equidigital number, since it uses as much as digits as its factorization.

56541000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 56541000421 its reverse (12400014565), we get a palindrome (68941014986).

The spelling of 56541000421 in words is "fifty-six billion, five hundred forty-one million, four hundred twenty-one", and thus it is an aban number.