54718561 has 2 divisors, whose sum is σ = 54718562. Its totient is φ = 54718560.

The previous prime is 54718553. The next prime is 54718571. The reversal of 54718561 is 16581745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34152336 + 20566225 = 5844^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 54718561 - 2³ = 54718553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54718561.

It is not a weakly prime, because it can be changed into another prime (54718511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27359280 + 27359281.

It is an arithmetic number, because the mean of its divisors is an integer number (27359281).

Almost surely, 2^54718561 is an apocalyptic number.

It is an amenable number.

54718561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54718561 is an equidigital number, since it uses as much as digits as its factorization.

54718561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 37.

The square root of 54718561 is about 7397.1995376629. The cubic root of 54718561 is about 379.6454703521.

The spelling of 54718561 in words is "fifty-four million, seven hundred eighteen thousand, five hundred sixty-one".