56650091 has 4 divisors (see below), whose sum is σ = 56850552. Its totient is φ = 56449632.

The previous prime is 56650067. The next prime is 56650093. The reversal of 56650091 is 19005665.

56650091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56650091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56650093) 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 in 3 ways as a sum of consecutive naturals, for example, 99806 + ... + 100371.

It is an arithmetic number, because the mean of its divisors is an integer number (14212638).

Almost surely, 2^56650091 is an apocalyptic number.

56650091 is a deficient number, since it is larger than the sum of its proper divisors (200461).

56650091 is a wasteful number, since it uses less digits than its factorization.

56650091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200460.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 56650091 is about 7526.6254722817. The cubic root of 56650091 is about 384.0609960796.

The spelling of 56650091 in words is "fifty-six million, six hundred fifty thousand, ninety-one".