120511055 has 16 divisors (see below), whose sum is σ = 168791040. Its totient is φ = 80876832.

The previous prime is 120511049. The next prime is 120511057. The reversal of 120511055 is 550115021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120511055 - 2⁸ = 120510799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120511057) 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 in 15 ways as a sum of consecutive naturals, for example, 34985 + ... + 38274.

It is an arithmetic number, because the mean of its divisors is an integer number (10549440).

Almost surely, 2^120511055 is an apocalyptic number.

120511055 is a deficient number, since it is larger than the sum of its proper divisors (48279985).

120511055 is an equidigital number, since it uses as much as digits as its factorization.

120511055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73318.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 120511055 is about 10977.7527299534. The cubic root of 120511055 is about 493.9416287634.

Adding to 120511055 its reverse (550115021), we get a palindrome (670626076).

The spelling of 120511055 in words is "one hundred twenty million, five hundred eleven thousand, fifty-five".