56111899 has 2 divisors, whose sum is σ = 56111900. Its totient is φ = 56111898.

The previous prime is 56111879. The next prime is 56111911. The reversal of 56111899 is 99811165.

56111899 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 is a cyclic number.

It is not a de Polignac number, because 56111899 - 2¹⁹ = 55587611 is a prime.

It is not a weakly prime, because it can be changed into another prime (56111819) 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, 28055949 + 28055950.

It is an arithmetic number, because the mean of its divisors is an integer number (28055950).

Almost surely, 2^56111899 is an apocalyptic number.

56111899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56111899 is an equidigital number, since it uses as much as digits as its factorization.

56111899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 40.

The square root of 56111899 is about 7490.7876087899. The cubic root of 56111899 is about 382.8408944947.

The spelling of 56111899 in words is "fifty-six million, one hundred eleven thousand, eight hundred ninety-nine".