9055391 has 2 divisors, whose sum is σ = 9055392. Its totient is φ = 9055390.

The previous prime is 9055331. The next prime is 9055429. The reversal of 9055391 is 1935509.

9055391 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 is an emirp because it is prime and its reverse (1935509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9055391 - 2¹⁴ = 9039007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9055331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4527695 + 4527696.

It is an arithmetic number, because the mean of its divisors is an integer number (4527696).

Almost surely, 2^9055391 is an apocalyptic number.

9055391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9055391 is an equidigital number, since it uses as much as digits as its factorization.

9055391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 9055391 is about 3009.2176724192. The cubic root of 9055391 is about 208.4342428839.

The spelling of 9055391 in words is "nine million, fifty-five thousand, three hundred ninety-one".