56765161 has 2 divisors, whose sum is σ = 56765162. Its totient is φ = 56765160.

The previous prime is 56765153. The next prime is 56765167. The reversal of 56765161 is 16156765.

56765161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51566761 + 5198400 = 7181^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 56765161 - 2³ = 56765153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56765161.

It is not a weakly prime, because it can be changed into another prime (56765167) 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, 28382580 + 28382581.

It is an arithmetic number, because the mean of its divisors is an integer number (28382581).

Almost surely, 2^56765161 is an apocalyptic number.

It is an amenable number.

56765161 is a deficient number, since it is larger than the sum of its proper divisors (1).

56765161 is an equidigital number, since it uses as much as digits as its factorization.

56765161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 56765161 is about 7534.2657903740. The cubic root of 56765161 is about 384.3208603854.

The spelling of 56765161 in words is "fifty-six million, seven hundred sixty-five thousand, one hundred sixty-one".