655112123 has 4 divisors (see below), whose sum is σ = 665851728. Its totient is φ = 644372520.

The previous prime is 655112099. The next prime is 655112149. The reversal of 655112123 is 321211556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655112123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655112092 and 655112101.

It is not an unprimeable number, because it can be changed into a prime (655112923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369711 + ... + 5369832.

It is an arithmetic number, because the mean of its divisors is an integer number (166462932).

Almost surely, 2^655112123 is an apocalyptic number.

655112123 is a deficient number, since it is larger than the sum of its proper divisors (10739605).

655112123 is a wasteful number, since it uses less digits than its factorization.

655112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739604.

The product of its digits is 1800, while the sum is 26.

The square root of 655112123 is about 25595.1581944711. The cubic root of 655112123 is about 868.5041115058.

Adding to 655112123 its reverse (321211556), we get a palindrome (976323679).

The spelling of 655112123 in words is "six hundred fifty-five million, one hundred twelve thousand, one hundred twenty-three".