56565101 has 2 divisors, whose sum is σ = 56565102. Its totient is φ = 56565100.

The previous prime is 56565097. The next prime is 56565121. The reversal of 56565101 is 10156565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 9916201 = 6830^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565101 - 2² = 56565097 is a prime.

It is a super-2 number, since 2×56565101² = 6399221302280402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56565121) 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, 28282550 + 28282551.

It is an arithmetic number, because the mean of its divisors is an integer number (28282551).

Almost surely, 2^56565101 is an apocalyptic number.

It is an amenable number.

56565101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565101 is an equidigital number, since it uses as much as digits as its factorization.

56565101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 56565101 is about 7520.9773965888. The cubic root of 56565101 is about 383.8688358634.

The spelling of 56565101 in words is "fifty-six million, five hundred sixty-five thousand, one hundred one".