54317891 has 2 divisors, whose sum is σ = 54317892. Its totient is φ = 54317890.

The previous prime is 54317867. The next prime is 54317959. The reversal of 54317891 is 19871345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54317891 - 2¹⁸ = 54055747 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54317821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27158945 + 27158946.

It is an arithmetic number, because the mean of its divisors is an integer number (27158946).

Almost surely, 2^54317891 is an apocalyptic number.

54317891 is a deficient number, since it is larger than the sum of its proper divisors (1).

54317891 is an equidigital number, since it uses as much as digits as its factorization.

54317891 is an evil number, because the sum of its binary digits is even.

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

The square root of 54317891 is about 7370.0672317151. The cubic root of 54317891 is about 378.7165634706.

The spelling of 54317891 in words is "fifty-four million, three hundred seventeen thousand, eight hundred ninety-one".