56791191 has 8 divisors (see below), whose sum is σ = 77568624. Its totient is φ = 36937280.

The previous prime is 56791159. The next prime is 56791199. The reversal of 56791191 is 19119765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56791191 - 2⁵ = 56791159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56791199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230736 + ... + 230981.

It is an arithmetic number, because the mean of its divisors is an integer number (9696078).

Almost surely, 2^56791191 is an apocalyptic number.

56791191 is a deficient number, since it is larger than the sum of its proper divisors (20777433).

56791191 is a wasteful number, since it uses less digits than its factorization.

56791191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461761.

The product of its digits is 17010, while the sum is 39.

The square root of 56791191 is about 7535.9930334363. The cubic root of 56791191 is about 384.3795956090.

The spelling of 56791191 in words is "fifty-six million, seven hundred ninety-one thousand, one hundred ninety-one".