54387191 has 2 divisors, whose sum is σ = 54387192. Its totient is φ = 54387190.

The previous prime is 54387167. The next prime is 54387259. The reversal of 54387191 is 19178345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54387191 - 2⁶ = 54387127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54387121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27193595 + 27193596.

It is an arithmetic number, because the mean of its divisors is an integer number (27193596).

Almost surely, 2^54387191 is an apocalyptic number.

54387191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54387191 is an equidigital number, since it uses as much as digits as its factorization.

54387191 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 54387191 is about 7374.7671827658. The cubic root of 54387191 is about 378.8775534251.

The spelling of 54387191 in words is "fifty-four million, three hundred eighty-seven thousand, one hundred ninety-one".