54345191 has 2 divisors, whose sum is σ = 54345192. Its totient is φ = 54345190.

The previous prime is 54345173. The next prime is 54345223. The reversal of 54345191 is 19154345.

It is an a-pointer prime, because the next prime (54345223) can be obtained adding 54345191 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54345191 - 2²² = 50150887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54342191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27172595 + 27172596.

It is an arithmetic number, because the mean of its divisors is an integer number (27172596).

Almost surely, 2^54345191 is an apocalyptic number.

54345191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54345191 is an equidigital number, since it uses as much as digits as its factorization.

54345191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 54345191 is about 7371.9190852857. The cubic root of 54345191 is about 378.7800000926.

The spelling of 54345191 in words is "fifty-four million, three hundred forty-five thousand, one hundred ninety-one".