65526161 has 4 divisors (see below), whose sum is σ = 66262500. Its totient is φ = 64789824.

The previous prime is 65526151. The next prime is 65526169. The reversal of 65526161 is 16162556.

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 35331136 + 30195025 = 5944^2 + 5495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65526161 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 (65526169) 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, 368036 + ... + 368213.

It is an arithmetic number, because the mean of its divisors is an integer number (16565625).

Almost surely, 2^65526161 is an apocalyptic number.

It is an amenable number.

65526161 is a deficient number, since it is larger than the sum of its proper divisors (736339).

65526161 is an equidigital number, since it uses as much as digits as its factorization.

65526161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736338.

The product of its digits is 10800, while the sum is 32.

The square root of 65526161 is about 8094.8230987465. The cubic root of 65526161 is about 403.1545585842.

The spelling of 65526161 in words is "sixty-five million, five hundred twenty-six thousand, one hundred sixty-one".