54198517 has 2 divisors, whose sum is σ = 54198518. Its totient is φ = 54198516.

The previous prime is 54198493. The next prime is 54198523. The reversal of 54198517 is 71589145.

It is a happy number.

54198517 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 can be written as a sum of positive squares in only one way, i.e., 53494596 + 703921 = 7314^2 + 839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54198517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54198517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54198527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27099258 + 27099259.

It is an arithmetic number, because the mean of its divisors is an integer number (27099259).

Almost surely, 2^54198517 is an apocalyptic number.

It is an amenable number.

54198517 is a deficient number, since it is larger than the sum of its proper divisors (1).

54198517 is an equidigital number, since it uses as much as digits as its factorization.

54198517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The square root of 54198517 is about 7361.9642080086. The cubic root of 54198517 is about 378.4389258504.

The spelling of 54198517 in words is "fifty-four million, one hundred ninety-eight thousand, five hundred seventeen".