54952561 has 2 divisors, whose sum is σ = 54952562. Its totient is φ = 54952560.

The previous prime is 54952531. The next prime is 54952577. The reversal of 54952561 is 16525945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 3744225 = 7156^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 54952561 - 2⁷ = 54952433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54952561.

It is not a weakly prime, because it can be changed into another prime (54952531) 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, 27476280 + 27476281.

It is an arithmetic number, because the mean of its divisors is an integer number (27476281).

Almost surely, 2^54952561 is an apocalyptic number.

It is an amenable number.

54952561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54952561 is an equidigital number, since it uses as much as digits as its factorization.

54952561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 37.

The square root of 54952561 is about 7412.9994604074. Note that the first 3 decimals coincide. The cubic root of 54952561 is about 380.1858762848.

The spelling of 54952561 in words is "fifty-four million, nine hundred fifty-two thousand, five hundred sixty-one".