54665222291 has 2 divisors, whose sum is σ = 54665222292. Its totient is φ = 54665222290.

The previous prime is 54665222273. The next prime is 54665222323. The reversal of 54665222291 is 19222256645.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54665222291 is a prime.

It is not a weakly prime, because it can be changed into another prime (54665222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27332611145 + 27332611146.

It is an arithmetic number, because the mean of its divisors is an integer number (27332611146).

Almost surely, 2^54665222291 is an apocalyptic number.

54665222291 is a deficient number, since it is larger than the sum of its proper divisors (1).

54665222291 is an equidigital number, since it uses as much as digits as its factorization.

54665222291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The spelling of 54665222291 in words is "fifty-four billion, six hundred sixty-five million, two hundred twenty-two thousand, two hundred ninety-one".