55512123 has 16 divisors (see below), whose sum is σ = 80040960. Its totient is φ = 34088576.

The previous prime is 55512077. The next prime is 55512137. The reversal of 55512123 is 32121555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55512123 - 2⁸ = 55511867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55512093 and 55512102.

It is not an unprimeable number, because it can be changed into a prime (55511123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9183 + ... + 13976.

It is an arithmetic number, because the mean of its divisors is an integer number (5002560).

Almost surely, 2^55512123 is an apocalyptic number.

55512123 is a deficient number, since it is larger than the sum of its proper divisors (24528837).

55512123 is a wasteful number, since it uses less digits than its factorization.

55512123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23226.

The product of its digits is 1500, while the sum is 24.

The square root of 55512123 is about 7450.6458109348. The cubic root of 55512123 is about 381.4719525308.

Adding to 55512123 its reverse (32121555), we get a palindrome (87633678).

The spelling of 55512123 in words is "fifty-five million, five hundred twelve thousand, one hundred twenty-three".