56106170521 has 2 divisors, whose sum is σ = 56106170522. Its totient is φ = 56106170520.

The previous prime is 56106170501. The next prime is 56106170563. The reversal of 56106170521 is 12507160165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56083712400 + 22458121 = 236820^2 + 4739^2 .

It is a cyclic number.

It is not a de Polignac number, because 56106170521 - 2⁵ = 56106170489 is a prime.

It is a super-2 number, since 2×56106170521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56106170501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28053085260 + 28053085261.

It is an arithmetic number, because the mean of its divisors is an integer number (28053085261).

Almost surely, 2^56106170521 is an apocalyptic number.

It is an amenable number.

56106170521 is a deficient number, since it is larger than the sum of its proper divisors (1).

56106170521 is an equidigital number, since it uses as much as digits as its factorization.

56106170521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 56106170521 in words is "fifty-six billion, one hundred six million, one hundred seventy thousand, five hundred twenty-one".