65171245 has 12 divisors (see below), whose sum is σ = 80384724. Its totient is φ = 50722560.

The previous prime is 65171233. The next prime is 65171257. The reversal of 65171245 is 54217156.

It is an interprime number because it is at equal distance from previous prime (65171233) and next prime (65171257).

It can be written as a sum of positive squares in 6 ways, for example, as 7851204 + 57320041 = 2802^2 + 7571^2 .

It is not a de Polignac number, because 65171245 - 2⁹ = 65170733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2085 + ... + 11605.

It is an arithmetic number, because the mean of its divisors is an integer number (6698727).

Almost surely, 2^65171245 is an apocalyptic number.

It is an amenable number.

65171245 is a deficient number, since it is larger than the sum of its proper divisors (15213479).

65171245 is an equidigital number, since it uses as much as digits as its factorization.

65171245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600 (or 9563 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 65171245 is about 8072.8709267521. The cubic root of 65171245 is about 402.4253581224.

The spelling of 65171245 in words is "sixty-five million, one hundred seventy-one thousand, two hundred forty-five".