55367779 has 2 divisors, whose sum is σ = 55367780. Its totient is φ = 55367778.

The previous prime is 55367773. The next prime is 55367791. The reversal of 55367779 is 97776355.

55367779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55367779 - 2³ = 55367771 is a prime.

It is not a weakly prime, because it can be changed into another prime (55367771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27683889 + 27683890.

It is an arithmetic number, because the mean of its divisors is an integer number (27683890).

Almost surely, 2^55367779 is an apocalyptic number.

55367779 is a deficient number, since it is larger than the sum of its proper divisors (1).

55367779 is an equidigital number, since it uses as much as digits as its factorization.

55367779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1389150, while the sum is 49.

The square root of 55367779 is about 7440.9528287713. The cubic root of 55367779 is about 381.1410279258.

The spelling of 55367779 in words is "fifty-five million, three hundred sixty-seven thousand, seven hundred seventy-nine".