65530523 has 4 divisors (see below), whose sum is σ = 66030888. Its totient is φ = 65030160.

The previous prime is 65530513. The next prime is 65530537. The reversal of 65530523 is 32503556.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65530523 - 2¹⁴ = 65514139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65530513) 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, 249986 + ... + 250247.

It is an arithmetic number, because the mean of its divisors is an integer number (16507722).

Almost surely, 2^65530523 is an apocalyptic number.

65530523 is a deficient number, since it is larger than the sum of its proper divisors (500365).

65530523 is a wasteful number, since it uses less digits than its factorization.

65530523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500364.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 65530523 is about 8095.0925257220. The cubic root of 65530523 is about 403.1635042284.

The spelling of 65530523 in words is "sixty-five million, five hundred thirty thousand, five hundred twenty-three".