54217717 has 2 divisors, whose sum is σ = 54217718. Its totient is φ = 54217716.

The previous prime is 54217699. The next prime is 54217721. The reversal of 54217717 is 71771245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 2937796 = 7161^2 + 1714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54217717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54217747) 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, 27108858 + 27108859.

It is an arithmetic number, because the mean of its divisors is an integer number (27108859).

Almost surely, 2^54217717 is an apocalyptic number.

It is an amenable number.

54217717 is a deficient number, since it is larger than the sum of its proper divisors (1).

54217717 is an equidigital number, since it uses as much as digits as its factorization.

54217717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13720, while the sum is 34.

The square root of 54217717 is about 7363.2680923622. The cubic root of 54217717 is about 378.4836083125.

The spelling of 54217717 in words is "fifty-four million, two hundred seventeen thousand, seven hundred seventeen".