54431191 has 2 divisors, whose sum is σ = 54431192. Its totient is φ = 54431190.

The previous prime is 54431183. The next prime is 54431197. The reversal of 54431191 is 19113445.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54431191 - 2³ = 54431183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54431197) 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, 27215595 + 27215596.

It is an arithmetic number, because the mean of its divisors is an integer number (27215596).

Almost surely, 2^54431191 is an apocalyptic number.

54431191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54431191 is an equidigital number, since it uses as much as digits as its factorization.

54431191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 54431191 is about 7377.7497246789. The cubic root of 54431191 is about 378.9796983020.

The spelling of 54431191 in words is "fifty-four million, four hundred thirty-one thousand, one hundred ninety-one".