65212243 has 4 divisors (see below), whose sum is σ = 65274768. Its totient is φ = 65149720.

The previous prime is 65212223. The next prime is 65212247. The reversal of 65212243 is 34221256.

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 65212243 - 2⁵ = 65212211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65212247) 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, 29671 + ... + 31792.

It is an arithmetic number, because the mean of its divisors is an integer number (16318692).

Almost surely, 2^65212243 is an apocalyptic number.

65212243 is a deficient number, since it is larger than the sum of its proper divisors (62525).

65212243 is a wasteful number, since it uses less digits than its factorization.

65212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62524.

The product of its digits is 2880, while the sum is 25.

The square root of 65212243 is about 8075.4097728846. The cubic root of 65212243 is about 402.5097264987.

Adding to 65212243 its reverse (34221256), we get a palindrome (99433499).

The spelling of 65212243 in words is "sixty-five million, two hundred twelve thousand, two hundred forty-three".