56015899 has 2 divisors, whose sum is σ = 56015900. Its totient is φ = 56015898.

The previous prime is 56015887. The next prime is 56015903. The reversal of 56015899 is 99851065.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56015899 - 2¹¹ = 56013851 is a prime.

It is not a weakly prime, because it can be changed into another prime (56015599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28007949 + 28007950.

It is an arithmetic number, because the mean of its divisors is an integer number (28007950).

Almost surely, 2^56015899 is an apocalyptic number.

56015899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56015899 is an equidigital number, since it uses as much as digits as its factorization.

56015899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 56015899 is about 7484.3769947805. The cubic root of 56015899 is about 382.6224399058.

The spelling of 56015899 in words is "fifty-six million, fifteen thousand, eight hundred ninety-nine".