55054561 has 2 divisors, whose sum is σ = 55054562. Its totient is φ = 55054560.

The previous prime is 55054553. The next prime is 55054583. The reversal of 55054561 is 16545055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 19580625 = 5956^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 55054561 - 2³ = 55054553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55054501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527280 + 27527281.

It is an arithmetic number, because the mean of its divisors is an integer number (27527281).

Almost surely, 2^55054561 is an apocalyptic number.

It is an amenable number.

55054561 is a deficient number, since it is larger than the sum of its proper divisors (1).

55054561 is an equidigital number, since it uses as much as digits as its factorization.

55054561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 55054561 is about 7419.8760771323. The cubic root of 55054561 is about 380.4209577821.

The spelling of 55054561 in words is "fifty-five million, fifty-four thousand, five hundred sixty-one".