56387899 has 2 divisors, whose sum is σ = 56387900. Its totient is φ = 56387898.

The previous prime is 56387887. The next prime is 56387911. The reversal of 56387899 is 99878365.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (56387887) and next prime (56387911).

It is a cyclic number.

It is not a de Polignac number, because 56387899 - 2¹⁹ = 55863611 is a prime.

It is not a weakly prime, because it can be changed into another prime (56387869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28193949 + 28193950.

It is an arithmetic number, because the mean of its divisors is an integer number (28193950).

Almost surely, 2^56387899 is an apocalyptic number.

56387899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56387899 is an equidigital number, since it uses as much as digits as its factorization.

56387899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 56387899 is about 7509.1876391525. The cubic root of 56387899 is about 383.4675667680.

The spelling of 56387899 in words is "fifty-six million, three hundred eighty-seven thousand, eight hundred ninety-nine".