56015100509 has 2 divisors, whose sum is σ = 56015100510. Its totient is φ = 56015100508.

The previous prime is 56015100469. The next prime is 56015100563. The reversal of 56015100509 is 90500151065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49927668025 + 6087432484 = 223445^2 + 78022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56015100509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56015100209) 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, 28007550254 + 28007550255.

It is an arithmetic number, because the mean of its divisors is an integer number (28007550255).

Almost surely, 2^56015100509 is an apocalyptic number.

It is an amenable number.

56015100509 is a deficient number, since it is larger than the sum of its proper divisors (1).

56015100509 is an equidigital number, since it uses as much as digits as its factorization.

56015100509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 32.

The spelling of 56015100509 in words is "fifty-six billion, fifteen million, one hundred thousand, five hundred nine".