120551779 has 2 divisors, whose sum is σ = 120551780. Its totient is φ = 120551778.

The previous prime is 120551759. The next prime is 120551801. The reversal of 120551779 is 977155021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120551779 is a prime.

It is not a weakly prime, because it can be changed into another prime (120551749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60275889 + 60275890.

It is an arithmetic number, because the mean of its divisors is an integer number (60275890).

Almost surely, 2^120551779 is an apocalyptic number.

120551779 is a deficient number, since it is larger than the sum of its proper divisors (1).

120551779 is an equidigital number, since it uses as much as digits as its factorization.

120551779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 120551779 is about 10979.6074155682. The cubic root of 120551779 is about 493.9972613178.

The spelling of 120551779 in words is "one hundred twenty million, five hundred fifty-one thousand, seven hundred seventy-nine".