55122155 has 24 divisors (see below), whose sum is σ = 73256400. Its totient is φ = 39786560.

The previous prime is 55122149. The next prime is 55122167.

55122155 is nontrivially palindromic in base 10.

55122155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55122155 - 2⁶ = 55122091 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 108041 + ... + 108549.

It is an arithmetic number, because the mean of its divisors is an integer number (3052350).

Almost surely, 2^55122155 is an apocalyptic number.

55122155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55122155 is a deficient number, since it is larger than the sum of its proper divisors (18134245).

55122155 is a wasteful number, since it uses less digits than its factorization.

55122155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 704 counting only the distinct ones).

The product of its digits is 2500, while the sum is 26.

The square root of 55122155 is about 7424.4296077207. The cubic root of 55122155 is about 380.5765831428.

It can be divided in two parts, 5512 and 2155, that added together give a palindrome (7667).

The spelling of 55122155 in words is "fifty-five million, one hundred twenty-two thousand, one hundred fifty-five".