54171389 has 2 divisors, whose sum is σ = 54171390. Its totient is φ = 54171388.

The previous prime is 54171349. The next prime is 54171407. The reversal of 54171389 is 98317145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 24108100 = 5483^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 54171389 - 2⁸ = 54171133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54171319) 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, 27085694 + 27085695.

It is an arithmetic number, because the mean of its divisors is an integer number (27085695).

Almost surely, 2^54171389 is an apocalyptic number.

It is an amenable number.

54171389 is a deficient number, since it is larger than the sum of its proper divisors (1).

54171389 is an equidigital number, since it uses as much as digits as its factorization.

54171389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 54171389 is about 7360.1215343227. The cubic root of 54171389 is about 378.3757752633.

The spelling of 54171389 in words is "fifty-four million, one hundred seventy-one thousand, three hundred eighty-nine".