56016817 has 2 divisors, whose sum is σ = 56016818. Its totient is φ = 56016816.

The previous prime is 56016803. The next prime is 56016827. The reversal of 56016817 is 71861065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 6561 = 7484^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 56016817 - 2¹¹ = 56014769 is a prime.

It is a super-2 number, since 2×56016817² = 6275767573622978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56016827) 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, 28008408 + 28008409.

It is an arithmetic number, because the mean of its divisors is an integer number (28008409).

Almost surely, 2^56016817 is an apocalyptic number.

It is an amenable number.

56016817 is a deficient number, since it is larger than the sum of its proper divisors (1).

56016817 is an equidigital number, since it uses as much as digits as its factorization.

56016817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 56016817 is about 7484.4383222791. The cubic root of 56016817 is about 382.6245300592.

The spelling of 56016817 in words is "fifty-six million, sixteen thousand, eight hundred seventeen".