55226121 has 16 divisors (see below), whose sum is σ = 76412160. Its totient is φ = 35436800.

The previous prime is 55226117. The next prime is 55226161. The reversal of 55226121 is 12162255.

It is a happy number.

55226121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55226121 - 2² = 55226117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55226091 and 55226100.

It is not an unprimeable number, because it can be changed into a prime (55226161) 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 in 15 ways as a sum of consecutive naturals, for example, 34096 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (4775760).

Almost surely, 2^55226121 is an apocalyptic number.

It is an amenable number.

55226121 is a deficient number, since it is larger than the sum of its proper divisors (21186039).

55226121 is a wasteful number, since it uses less digits than its factorization.

55226121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its digits is 1200, while the sum is 24.

The square root of 55226121 is about 7431.4279246993. The cubic root of 55226121 is about 380.8157016077.

Adding to 55226121 its reverse (12162255), we get a palindrome (67388376).

The spelling of 55226121 in words is "fifty-five million, two hundred twenty-six thousand, one hundred twenty-one".