56106005551 has 2 divisors, whose sum is σ = 56106005552. Its totient is φ = 56106005550.

The previous prime is 56106005503. The next prime is 56106005567. The reversal of 56106005551 is 15550060165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56106005551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56106005591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28053002775 + 28053002776.

It is an arithmetic number, because the mean of its divisors is an integer number (28053002776).

Almost surely, 2^56106005551 is an apocalyptic number.

56106005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

56106005551 is an equidigital number, since it uses as much as digits as its factorization.

56106005551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 56106005551 in words is "fifty-six billion, one hundred six million, five thousand, five hundred fifty-one".