56803513387 has 2 divisors, whose sum is σ = 56803513388. Its totient is φ = 56803513386.

The previous prime is 56803513301. The next prime is 56803513423. The reversal of 56803513387 is 78331530865.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56803513387 - 2²³ = 56795124779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56803513387.

It is not a weakly prime, because it can be changed into another prime (56803513787) 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, 28401756693 + 28401756694.

It is an arithmetic number, because the mean of its divisors is an integer number (28401756694).

Almost surely, 2^56803513387 is an apocalyptic number.

56803513387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56803513387 is an equidigital number, since it uses as much as digits as its factorization.

56803513387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 56803513387 in words is "fifty-six billion, eight hundred three million, five hundred thirteen thousand, three hundred eighty-seven".