54643591 has 2 divisors, whose sum is σ = 54643592. Its totient is φ = 54643590.

The previous prime is 54643579. The next prime is 54643613. The reversal of 54643591 is 19534645.

54643591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54643591 - 2⁹ = 54643079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54643591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54643691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27321795 + 27321796.

It is an arithmetic number, because the mean of its divisors is an integer number (27321796).

Almost surely, 2^54643591 is an apocalyptic number.

54643591 is a deficient number, since it is larger than the sum of its proper divisors (1).

54643591 is an equidigital number, since it uses as much as digits as its factorization.

54643591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 54643591 is about 7392.1303424656. The cubic root of 54643591 is about 379.4720067904.

The spelling of 54643591 in words is "fifty-four million, six hundred forty-three thousand, five hundred ninety-one".