65133211 has 24 divisors (see below), whose sum is σ = 78829632. Its totient is φ = 53433600.

The previous prime is 65133181. The next prime is 65133221. The reversal of 65133211 is 11233156.

It is a happy number.

It is not a de Polignac number, because 65133211 - 2⁹ = 65132699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65133221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73491 + ... + 74371.

It is an arithmetic number, because the mean of its divisors is an integer number (3284568).

Almost surely, 2^65133211 is an apocalyptic number.

65133211 is a deficient number, since it is larger than the sum of its proper divisors (13696421).

65133211 is a wasteful number, since it uses less digits than its factorization.

65133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 952 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 65133211 is about 8070.5149154190. The cubic root of 65133211 is about 402.3470576156.

Adding to 65133211 its reverse (11233156), we get a palindrome (76366367).

The spelling of 65133211 in words is "sixty-five million, one hundred thirty-three thousand, two hundred eleven".