65130161 has 4 divisors (see below), whose sum is σ = 65166324. Its totient is φ = 65094000.

The previous prime is 65130137. The next prime is 65130173. The reversal of 65130161 is 16103156.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39929761 + 25200400 = 6319^2 + 5020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65130161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65130061) 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, 15230 + ... + 19031.

It is an arithmetic number, because the mean of its divisors is an integer number (16291581).

Almost surely, 2^65130161 is an apocalyptic number.

It is an amenable number.

65130161 is a deficient number, since it is larger than the sum of its proper divisors (36163).

65130161 is a wasteful number, since it uses less digits than its factorization.

65130161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36162.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 65130161 is about 8070.3259537642. The cubic root of 65130161 is about 402.3407772676.

The spelling of 65130161 in words is "sixty-five million, one hundred thirty thousand, one hundred sixty-one".