56775091 has 2 divisors, whose sum is σ = 56775092. Its totient is φ = 56775090.

The previous prime is 56775077. The next prime is 56775113. The reversal of 56775091 is 19057765.

56775091 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 is a cyclic number.

It is not a de Polignac number, because 56775091 - 2¹¹ = 56773043 is a prime.

It is not a weakly prime, because it can be changed into another prime (56775001) 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, 28387545 + 28387546.

It is an arithmetic number, because the mean of its divisors is an integer number (28387546).

Almost surely, 2^56775091 is an apocalyptic number.

56775091 is a deficient number, since it is larger than the sum of its proper divisors (1).

56775091 is an equidigital number, since it uses as much as digits as its factorization.

56775091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 56775091 is about 7534.9247507855. The cubic root of 56775091 is about 384.3432689870.

The spelling of 56775091 in words is "fifty-six million, seven hundred seventy-five thousand, ninety-one".