65530123 has 4 divisors (see below), whose sum is σ = 65556088. Its totient is φ = 65504160.

The previous prime is 65530109. The next prime is 65530139. The reversal of 65530123 is 32103556.

It is a happy number.

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-65530123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65530723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8733 + ... + 14398.

It is an arithmetic number, because the mean of its divisors is an integer number (16389022).

Almost surely, 2^65530123 is an apocalyptic number.

65530123 is a deficient number, since it is larger than the sum of its proper divisors (25965).

65530123 is a wasteful number, since it uses less digits than its factorization.

65530123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25964.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 65530123 is about 8095.0678193577. The cubic root of 65530123 is about 403.1626839199.

Adding to 65530123 its reverse (32103556), we get a palindrome (97633679).

The spelling of 65530123 in words is "sixty-five million, five hundred thirty thousand, one hundred twenty-three".