56056056051509 has 2 divisors, whose sum is σ = 56056056051510. Its totient is φ = 56056056051508.

The previous prime is 56056056051493. The next prime is 56056056051553. The reversal of 56056056051509 is 90515065065065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52709095570609 + 3346960480900 = 7260103^2 + 1829470^2 .

It is a cyclic number.

It is not a de Polignac number, because 56056056051509 - 2⁴ = 56056056051493 is a prime.

It is a super-2 number, since 2×56056056051509² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56056056041509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28028028025754 + 28028028025755.

It is an arithmetic number, because the mean of its divisors is an integer number (28028028025755).

Almost surely, 2^{56056056051509} is an apocalyptic number.

It is an amenable number.

56056056051509 is a deficient number, since it is larger than the sum of its proper divisors (1).

56056056051509 is an equidigital number, since it uses as much as digits as its factorization.

56056056051509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075000, while the sum is 53.

The spelling of 56056056051509 in words is "fifty-six trillion, fifty-six billion, fifty-six million, fifty-one thousand, five hundred nine".