65550123 has 12 divisors (see below), whose sum is σ = 95092920. Its totient is φ = 43511136.

The previous prime is 65550119. The next prime is 65550139. The reversal of 65550123 is 32105556.

65550123 is a `hidden beast` number, since 655 + 5 + 0 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 65550123 - 2² = 65550119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65550143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13533 + ... + 17726.

It is an arithmetic number, because the mean of its divisors is an integer number (7924410).

Almost surely, 2^65550123 is an apocalyptic number.

65550123 is a deficient number, since it is larger than the sum of its proper divisors (29542797).

65550123 is a wasteful number, since it uses less digits than its factorization.

65550123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31498 (or 31495 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 65550123 is about 8096.3030452176. The cubic root of 65550123 is about 403.2036952550.

Adding to 65550123 its reverse (32105556), we get a palindrome (97655679).

The spelling of 65550123 in words is "sixty-five million, five hundred fifty thousand, one hundred twenty-three".