65161001 has 8 divisors (see below), whose sum is σ = 68178240. Its totient is φ = 62159152.

The previous prime is 65160973. The next prime is 65161003. The reversal of 65161001 is 10016156.

It is a happy number.

65161001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65161001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65161003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (8522280).

Almost surely, 2^65161001 is an apocalyptic number.

It is an amenable number.

65161001 is a deficient number, since it is larger than the sum of its proper divisors (3017239).

65161001 is a wasteful number, since it uses less digits than its factorization.

65161001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 65161001 is about 8072.2364311261. The cubic root of 65161001 is about 402.4042718218.

Adding to 65161001 its reverse (10016156), we get a palindrome (75177157).

The spelling of 65161001 in words is "sixty-five million, one hundred sixty-one thousand, one".