65112271 has 4 divisors (see below), whose sum is σ = 74414032. Its totient is φ = 55810512.

The previous prime is 65112263. The next prime is 65112293. The reversal of 65112271 is 17221156.

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 65112271 - 2³ = 65112263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65112251) 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, 4650870 + ... + 4650883.

It is an arithmetic number, because the mean of its divisors is an integer number (18603508).

Almost surely, 2^65112271 is an apocalyptic number.

65112271 is a deficient number, since it is larger than the sum of its proper divisors (9301761).

65112271 is an equidigital number, since it uses as much as digits as its factorization.

65112271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301760.

The product of its digits is 840, while the sum is 25.

The square root of 65112271 is about 8069.2174961393. The cubic root of 65112271 is about 402.3039354751.

The spelling of 65112271 in words is "sixty-five million, one hundred twelve thousand, two hundred seventy-one".