55123233 has 16 divisors (see below), whose sum is σ = 81694656. Its totient is φ = 32776640.

The previous prime is 55123223. The next prime is 55123241. The reversal of 55123233 is 33232155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55123233 - 2⁴ = 55123217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55123223) 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, 14010 + ... + 17507.

It is an arithmetic number, because the mean of its divisors is an integer number (5105916).

Almost surely, 2^55123233 is an apocalyptic number.

55123233 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55123233 is a deficient number, since it is larger than the sum of its proper divisors (26571423).

55123233 is a wasteful number, since it uses less digits than its factorization.

55123233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31584.

The product of its digits is 2700, while the sum is 24.

The square root of 55123233 is about 7424.5022055354. The cubic root of 55123233 is about 380.5790640502.

Adding to 55123233 its reverse (33232155), we get a palindrome (88355388).

The spelling of 55123233 in words is "fifty-five million, one hundred twenty-three thousand, two hundred thirty-three".