54065191 has 2 divisors, whose sum is σ = 54065192. Its totient is φ = 54065190.

The previous prime is 54065171. The next prime is 54065197. The reversal of 54065191 is 19156045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54065191 - 2⁹ = 54064679 is a prime.

It is equal to p_3229834 and since 54065191 and 3229834 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54065197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27032595 + 27032596.

It is an arithmetic number, because the mean of its divisors is an integer number (27032596).

Almost surely, 2^54065191 is an apocalyptic number.

54065191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54065191 is an equidigital number, since it uses as much as digits as its factorization.

54065191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 54065191 is about 7352.9035761392. The cubic root of 54065191 is about 378.1283566034.

The spelling of 54065191 in words is "fifty-four million, sixty-five thousand, one hundred ninety-one".