56531017 has 2 divisors, whose sum is σ = 56531018. Its totient is φ = 56531016.

The previous prime is 56531009. The next prime is 56531029. The reversal of 56531017 is 71013565.

56531017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 23629321 = 5736^2 + 4861^2 .

It is a cyclic number.

It is not a de Polignac number, because 56531017 - 2³ = 56531009 is a prime.

It is not a weakly prime, because it can be changed into another prime (56532017) 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, 28265508 + 28265509.

It is an arithmetic number, because the mean of its divisors is an integer number (28265509).

Almost surely, 2^56531017 is an apocalyptic number.

It is an amenable number.

56531017 is a deficient number, since it is larger than the sum of its proper divisors (1).

56531017 is an equidigital number, since it uses as much as digits as its factorization.

56531017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 56531017 is about 7518.7111262503. The cubic root of 56531017 is about 383.7917187365.

It can be divided in two parts, 5653 and 1017, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 56531017 in words is "fifty-six million, five hundred thirty-one thousand, seventeen".