54217687 has 2 divisors, whose sum is σ = 54217688. Its totient is φ = 54217686.

The previous prime is 54217679. The next prime is 54217699. The reversal of 54217687 is 78671245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54217687 - 2³ = 54217679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54217627) 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, 27108843 + 27108844.

It is an arithmetic number, because the mean of its divisors is an integer number (27108844).

Almost surely, 2^54217687 is an apocalyptic number.

54217687 is a deficient number, since it is larger than the sum of its proper divisors (1).

54217687 is an equidigital number, since it uses as much as digits as its factorization.

54217687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 54217687 is about 7363.2660552230. The cubic root of 54217687 is about 378.4835385044.

The spelling of 54217687 in words is "fifty-four million, two hundred seventeen thousand, six hundred eighty-seven".