54767809 has 2 divisors, whose sum is σ = 54767810. Its totient is φ = 54767808.

The previous prime is 54767771. The next prime is 54767819. The reversal of 54767809 is 90876745.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 5107600 = 7047^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 54767809 - 2¹⁷ = 54636737 is a prime.

It is not a weakly prime, because it can be changed into another prime (54767819) 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, 27383904 + 27383905.

It is an arithmetic number, because the mean of its divisors is an integer number (27383905).

Almost surely, 2^54767809 is an apocalyptic number.

It is an amenable number.

54767809 is a deficient number, since it is larger than the sum of its proper divisors (1).

54767809 is an equidigital number, since it uses as much as digits as its factorization.

54767809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 54767809 is about 7400.5276163257. The cubic root of 54767809 is about 379.7593328355.

The spelling of 54767809 in words is "fifty-four million, seven hundred sixty-seven thousand, eight hundred nine".