55123266 has 32 divisors (see below), whose sum is σ = 123524928. Its totient is φ = 16251840.

The previous prime is 55123261. The next prime is 55123273. The reversal of 55123266 is 66232155.

It is not an unprimeable number, because it can be changed into a prime (55123261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8845 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (3860154).

Almost surely, 2^55123266 is an apocalyptic number.

55123266 is an abundant number, since it is smaller than the sum of its proper divisors (68401662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55123266 is a wasteful number, since it uses less digits than its factorization.

55123266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22626.

The product of its digits is 10800, while the sum is 30.

The square root of 55123266 is about 7424.5044279063. The cubic root of 55123266 is about 380.5791399958.

Subtracting 55123266 from its reverse (66232155), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 5512 and 3266, that added together give a palindrome (8778).

The spelling of 55123266 in words is "fifty-five million, one hundred twenty-three thousand, two hundred sixty-six".