56559101 has 2 divisors, whose sum is σ = 56559102. Its totient is φ = 56559100.

The previous prime is 56559089. The next prime is 56559103. The reversal of 56559101 is 10195565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37810201 + 18748900 = 6149^2 + 4330^2 .

It is a cyclic number.

It is not a de Polignac number, because 56559101 - 2⁶ = 56559037 is a prime.

Together with 56559103, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3369641 and since 56559101 and 3369641 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56559103) 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, 28279550 + 28279551.

It is an arithmetic number, because the mean of its divisors is an integer number (28279551).

Almost surely, 2^56559101 is an apocalyptic number.

It is an amenable number.

56559101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56559101 is an equidigital number, since it uses as much as digits as its factorization.

56559101 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 square root of 56559101 is about 7520.5785016846. The cubic root of 56559101 is about 383.8552627449.

The spelling of 56559101 in words is "fifty-six million, five hundred fifty-nine thousand, one hundred one".