8555791 has 2 divisors, whose sum is σ = 8555792. Its totient is φ = 8555790.

The previous prime is 8555773. The next prime is 8555801. The reversal of 8555791 is 1975558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8555791 - 2⁵ = 8555759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8555711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277895 + 4277896.

It is an arithmetic number, because the mean of its divisors is an integer number (4277896).

Almost surely, 2^8555791 is an apocalyptic number.

8555791 is a deficient number, since it is larger than the sum of its proper divisors (1).

8555791 is an equidigital number, since it uses as much as digits as its factorization.

8555791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 40.

The square root of 8555791 is about 2925.0283759307. The cubic root of 8555791 is about 204.5282907917.

The spelling of 8555791 in words is "eight million, five hundred fifty-five thousand, seven hundred ninety-one".