54685663 has 2 divisors, whose sum is σ = 54685664. Its totient is φ = 54685662.

The previous prime is 54685649. The next prime is 54685681. The reversal of 54685663 is 36658645.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54685663 - 2¹³ = 54677471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54685613) 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, 27342831 + 27342832.

It is an arithmetic number, because the mean of its divisors is an integer number (27342832).

Almost surely, 2^54685663 is an apocalyptic number.

54685663 is a deficient number, since it is larger than the sum of its proper divisors (1).

54685663 is an equidigital number, since it uses as much as digits as its factorization.

54685663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 43.

The square root of 54685663 is about 7394.9755239622. The cubic root of 54685663 is about 379.5693713691.

The spelling of 54685663 in words is "fifty-four million, six hundred eighty-five thousand, six hundred sixty-three".